Combining Philosophers

All the ideas for Peter Geach, Gottfried Leibniz and Aristotle

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1648 ideas

1. Philosophy / A. Wisdom / 1. Nature of Wisdom
Wisdom is scientific and intuitive knowledge of what is by nature most precious [Aristotle]
Wisdom does not study happiness, because it is not concerned with processes [Aristotle]
Knowledge chosen for its own sake, rather than for results, is wisdom [Aristotle]
There is practical wisdom (for action), and theoretical wisdom (for deep understanding) [Aristotle, by Whitcomb]
Wisdom seeks explanations, causes, and reasons why things are as they are [Aristotle, by Politis]
Wisdom is the science of happiness [Leibniz]
Wisdom is knowing all of the sciences, and their application [Leibniz]
Wisdom involves the desire to achieve perfection [Leibniz]
1. Philosophy / A. Wisdom / 2. Wise People
Aristotle thinks human life is not important enough to spend a whole life on it [Nagel on Aristotle]
Wise people can contemplate alone, though co-operation helps [Aristotle]
Wise people have fewer acts of will, because such acts are linked together [Leibniz]
It is not much help if a doctor knows about universals but not the immediate particular [Aristotle]
1. Philosophy / C. History of Philosophy / 4. Later European Philosophy / b. Seventeenth century philosophy
Leibniz aims to give coherent rational support for empiricism [Leibniz, by Perkins]
1. Philosophy / D. Nature of Philosophy / 1. Philosophy
All philosophy begins from wonder, either at the physical world, or at ideas [Aristotle]
1. Philosophy / D. Nature of Philosophy / 2. Invocation to Philosophy
Without extensive examination firm statements are hard, but studying the difficulties is profitable [Aristotle]
If each of us can give some logos about parts of nature, our combined efforts can be impressive [Aristotle]
All other human gifts can harm us, but not correct reasoning [Leibniz]
Philosophy is sanctified, because it flows from God [Leibniz]
1. Philosophy / D. Nature of Philosophy / 3. Philosophy Defined
Philosophy is a kind of science that deals with principles [Aristotle]
Absolute thinking is the thinking of thinking [Aristotle]
Philosophy has different powers from dialectic, and a different life from sophistry [Aristotle]
1. Philosophy / D. Nature of Philosophy / 4. Divisions of Philosophy
If only natural substances exist, science is first philosophy - but not if there is an immovable substance [Aristotle]
1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / a. Philosophy as worldly
Free and great-souled men do not keep asking "what is the use of it?" [Aristotle]
Unobservant thinkers tend to dogmatise using insufficient facts [Aristotle]
1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / c. Philosophy as generalisation
Wisdom is knowledge of principles and causes [Aristotle]
1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / d. Philosophy as puzzles
Inquiry is the cause of philosophy [Aristotle]
Translate as 'humans all desire by nature to understand' (not as 'to know') [Aristotle, by Annas]
1. Philosophy / D. Nature of Philosophy / 6. Hopes for Philosophy
Even people who go astray in their opinions have contributed something useful [Aristotle]
1. Philosophy / D. Nature of Philosophy / 7. Despair over Philosophy
Most people are readier to submit to compulsion than to argument [Aristotle]
1. Philosophy / E. Nature of Metaphysics / 1. Nature of Metaphysics
Metaphysics is a science of the intelligible nature of being [Leibniz, by Cover/O'Leary-Hawthorne]
1. Philosophy / E. Nature of Metaphysics / 4. Metaphysics as Science
Leibniz tried to combine mechanistic physics with scholastic metaphysics [Leibniz, by Pasnau]
1. Philosophy / E. Nature of Metaphysics / 5. Metaphysics beyond Science
Metaphysics is geometrical, resting on non-contradiction and sufficient reason [Leibniz]
We can grasp the wisdom of God a priori [Leibniz]
1. Philosophy / F. Analytic Philosophy / 1. Nature of Analysis
Our method of inquiry is to examine the smallest parts that make up the whole [Aristotle]
An idea is analysed perfectly when it is shown a priori that it is possible [Leibniz]
Analysis is the art of finding the middle term [Leibniz]
1. Philosophy / F. Analytic Philosophy / 2. Analysis by Division
Analysing right down to primitive concepts seems beyond our powers [Leibniz]
Begin examination with basics, and subdivide till you can go no further [Aristotle]
1. Philosophy / F. Analytic Philosophy / 7. Limitations of Analysis
Trained minds never expect more precision than is possible [Aristotle]
1. Philosophy / G. Scientific Philosophy / 1. Aims of Science
The object of scientific knowledge is what is necessary [Aristotle]
2. Reason / A. Nature of Reason / 1. On Reason
Didactic argument starts from the principles of the subject, not from the opinions of the learner [Aristotle]
There is pure deductive reasoning, and explanatory demonstration reasoning [Aristotle, by Politis]
Reason is the faculty for grasping apriori necessary truths [Leibniz, by Burge]
A reason is a known truth which leads to assent to some further truth [Leibniz]
Desired responsible actions result either from rational or from irrational desire [Aristotle]
2. Reason / A. Nature of Reason / 2. Logos
Human beings, alone of the animals, have logos [Aristotle]
An account is either a definition or a demonstration [Aristotle]
For Aristotle logos is essentially the ability to talk rationally about questions of value [Roochnik on Aristotle]
2. Reason / A. Nature of Reason / 3. Pure Reason
Reasonings have a natural ordering in God's understanding, but only a temporal order in ours [Leibniz]
2. Reason / A. Nature of Reason / 4. Aims of Reason
The two basics of reasoning are contradiction and sufficient reason [Leibniz]
Reasoning distinguishes what is beneficial, and hence what is right [Aristotle]
For Leibniz rationality is based on non-contradiction and the principle of sufficient reason [Leibniz, by Benardete,JA]
Aristotle is the supreme optimist about the ability of logos to explain nature [Roochnik on Aristotle]
Reason grasps generalities, while the senses grasp particulars [Aristotle]
Reasoning is a way of making statements which makes them lead on to other statements [Aristotle]
2. Reason / A. Nature of Reason / 6. Coherence
Maybe everything could be demonstrated, if demonstration can be reciprocal or circular [Aristotle]
2. Reason / A. Nature of Reason / 7. Status of Reason
Opposing reason is opposing truth, since reason is a chain of truths [Leibniz]
Intelligence which looks ahead is a natural master, while bodily strength is a natural slave [Aristotle]
It is readily agreed that thinking is the most godlike of things in our experience [Aristotle]
2. Reason / A. Nature of Reason / 9. Limits of Reason
The universe is infinitely varied, so the Buridan's Ass dilemma could never happen [Leibniz]
A very hungry man cannot choose between equidistant piles of food [Aristotle]
2. Reason / B. Laws of Thought / 1. Laws of Thought
General principles, even if unconscious, are indispensable for thinking [Leibniz]
Necessities rest on contradiction, and contingencies on sufficient reason [Leibniz]
2. Reason / B. Laws of Thought / 2. Sufficient Reason
The principle of sufficient reason is needed if we are to proceed from maths to physics [Leibniz]
Leibniz said the principle of sufficient reason is synthetic a priori, since its denial is not illogical [Leibniz, by Benardete,JA]
There is always a reason why things are thus rather than otherwise [Leibniz]
No reason could limit the quantity of matter, so there is no limit [Leibniz]
For every event it is possible for an omniscient being to give a reason for its occurrence [Leibniz]
No fact can be real and no proposition true unless there is a Sufficient Reason (even if we can't know it) [Leibniz]
2. Reason / B. Laws of Thought / 3. Non-Contradiction
The most certain basic principle is that contradictories can't be true at the same time [Aristotle]
Aristotle does not take the principle of non-contradiction for granted [Aristotle, by Politis]
A thing cannot be both in and not-in the same thing (at a given time) [Aristotle]
Contrary statements can both be reasonable, if they are meant in two different ways [Aristotle]
We cannot say that one thing both is and is not a man [Aristotle]
For Aristotle predication is regulated by Non-Contradiction, because underlying stability is essential [Roochnik on Aristotle]
2. Reason / B. Laws of Thought / 4. Contraries
Contraries are by definition as far distant as possible from one another [Aristotle]
The contrary of good is bad, but the contrary of bad is either good or another evil [Aristotle]
Both sides of contraries need not exist (as health without sickness, white without black) [Aristotle]
In "Callias is just/not just/unjust", which of these are contraries? [Aristotle]
From one thing alone we can infer its contrary [Aristotle]
Two falsehoods can be contrary to one another [Aristotle]
There is no middle ground in contradiction, but there is in contrariety [Aristotle]
2. Reason / B. Laws of Thought / 5. Opposites
If everything is made of opposites, are the opposed things made of opposites? [Aristotle]
Not everything is composed of opposites; what, for example, is the opposite of matter? [Aristotle]
2. Reason / B. Laws of Thought / 6. Ockham's Razor
Reason avoids multiplying hypotheses or principles [Leibniz]
2. Reason / C. Styles of Reason / 1. Dialectic
Dialectic starts from generally accepted opinions [Aristotle]
It is the role of dialectic to survey syllogisms [Aristotle]
Dialectic aims to start from generally accepted opinions, and lead to a contradiction [Aristotle]
2. Reason / C. Styles of Reason / 3. Eristic
Competitive argument aims at refutation, fallacy, paradox, solecism or repetition [Aristotle]
2. Reason / D. Definition / 1. Definitions
There can't be one definition of two things, or two definitions of the same thing [Aristotle]
Definitions are easily destroyed, since they can contain very many assertions [Aristotle]
The parts of a definition are isomorphic to the parts of the entity [Aristotle]
The material element may be essential to a definition [Aristotle]
If we define 'man' as 'two-footed animal', why does that make man a unity? [Aristotle]
'Nominal' definitions just list distinguishing characteristics [Leibniz]
2. Reason / D. Definition / 3. Types of Definition
A nominal definition is of the qualities, but the real definition is of the essential inner structure [Leibniz]
You can't define particulars, because accounts have to be generalised [Aristotle]
2. Reason / D. Definition / 4. Real Definition
Only substance [ousias] admits of definition [Aristotle]
Sometimes parts must be mentioned in definitions of essence, and sometimes not [Aristotle]
A definition must be of something primary [Aristotle]
One essence can be expressed by several definitions [Leibniz]
If our ideas of a thing are imperfect, the thing can have several unconnected definitions [Leibniz]
Real definitions, unlike nominal definitions, display possibilities [Leibniz]
Definitions can only be real if the item is possible [Leibniz]
Aristotelian definitions aim to give the essential properties of the thing defined [Aristotle, by Quine]
Definitions are of what something is, and that is universal [Aristotle]
An Aristotelian definition is causal [Aristotle, by Witt]
Definition by division needs predicates, which are well ordered and thorough [Aristotle]
You can define objects by progressively identifying what is the same and what is different [Aristotle]
Definitions need the complex features of form, and don't need to mention the category [Aristotle, by Wedin]
2. Reason / D. Definition / 5. Genus and Differentia
The differentia indicate the qualities, but not the essence [Aristotle]
In definitions the first term to be assigned ought to be the genus [Aristotle]
The genera and the differentiae are part of the essence [Aristotle]
Aristotelian definition involves first stating the genus, then the differentia of the thing [Aristotle, by Urmson]
'Plane' is the genus of plane figures, and 'solid' of solids, with differentiae picking out types of corner [Aristotle]
Whiteness can only belong to man because an individual like Callias happens to be white [Aristotle]
A definition is of the universal and of the kind [Aristotle]
Definition by division is into genus and differentiae [Aristotle]
If the genus is just its constitutive forms (or matter), then the definition is the account of the differentiae [Aristotle]
If I define you, I have to use terms which are all true of other things too [Aristotle]
Species and genera are largely irrelevant in 'Metaphysics' [Aristotle, by Wedin]
Aristotle's definitions are not unique, but apply to a range of individuals [Aristotle, by Witt]
Genus and differentia might be swapped, and 'rational animal' become 'animable rational' [Leibniz]
Differentia are generic, and belong with genus [Aristotle]
'Genus' is part of the essence shared among several things [Aristotle]
We describe the essence of a particular thing by means of its differentiae [Aristotle]
2. Reason / D. Definition / 6. Definition by Essence
The definition is peculiar to one thing, not common to many [Aristotle]
A definition is an account of a what-it-was-to-be-that-thing [Aristotle]
What it is and why it is are the same; screening defines and explains an eclipse [Aristotle]
Essence is not all the necessary properties, since these extend beyond the definition [Aristotle, by Witt]
2. Reason / E. Argument / 3. Analogy
Some things cannot be defined, and only an analogy can be given [Aristotle]
2. Reason / E. Argument / 6. Conclusive Proof
Leibniz is inclined to regard all truths as provable [Leibniz, by Frege]
2. Reason / F. Fallacies / 2. Infinite Regress
Not everything can be proven, because that would lead to an infinite regress [Aristotle]
2. Reason / F. Fallacies / 3. Question Begging
Men are natural leaders (apart from the unnatural ones) [Aristotle]
2. Reason / F. Fallacies / 5. Fallacy of Composition
'If each is small, so too are all' is in one way false, for the whole composed of all is not small [Aristotle]
2. Reason / F. Fallacies / 8. Category Mistake / a. Category mistakes
The differentiae of genera which are different are themselves different in kind [Aristotle]
3. Truth / A. Truth Problems / 1. Truth
Truth is a matter of asserting correct combinations and separations [Aristotle]
The predicate is in the subject of a true proposition [Leibniz]
A truth is just a proposition in which the predicate is contained within the subject [Leibniz]
Simple and essential truth seems to be given, with further truth arising in thinking [Aristotle]
Truth is either intuiting a way of being, or a putting together [Aristotle]
3. Truth / A. Truth Problems / 3. Value of Truth
Piety requires us to honour truth above our friends [Aristotle]
3. Truth / A. Truth Problems / 5. Truth Bearers
Truth is a characteristic of possible thoughts [Leibniz]
True and false seem to pertain to thoughts, yet unthought propositions seem to be true or false [Leibniz]
3. Truth / A. Truth Problems / 6. Verisimilitude
If one error is worse than another, it must be because it is further from the truth [Aristotle]
3. Truth / A. Truth Problems / 8. Subjective Truth
We hold a proposition true if we are ready to follow it, and can't see any objections [Leibniz]
Choose the true hypothesis, which is the most intelligible one [Leibniz]
3. Truth / B. Truthmakers / 1. For Truthmakers
Truth-thinking does not make it so; it being so is what makes it true [Aristotle]
3. Truth / B. Truthmakers / 5. What Makes Truths / a. What makes truths
The truth or falsity of a belief will be in terms of something that is always this way not that [Aristotle]
3. Truth / B. Truthmakers / 5. What Makes Truths / b. Objects make truths
A true existence statement has its truth caused by the existence of the thing [Aristotle]
3. Truth / B. Truthmakers / 10. Making Future Truths
It is necessary that either a sea-fight occurs tomorrow or it doesn't, though neither option is in itself necessary [Aristotle]
3. Truth / C. Correspondence Truth / 1. Correspondence Truth
A statement is true if all the data are in harmony with it [Aristotle]
Statements are true according to how things actually are [Aristotle]
Falsity says that which is isn't, and that which isn't is; truth says that which is is, and that which isn't isn't [Aristotle]
Aristotle's truth formulation concerns referring parts of sentences, not sentences as wholes [Aristotle, by Davidson]
Truth is correspondence between mental propositions and what they are about [Leibniz]
3. Truth / D. Coherence Truth / 1. Coherence Truth
Everything in the universe is interconnected, so potentially a mind could know everything [Leibniz]
4. Formal Logic / A. Syllogistic Logic / 1. Aristotelian Logic
Aristotle's later logic had to treat 'Socrates' as 'everything that is Socrates' [Potter on Aristotle]
Square of Opposition: not both true, or not both false; one-way implication; opposite truth-values [Aristotle]
Aristotle was the first to use schematic letters in logic [Aristotle, by Potter]
Aristotelian syllogisms are three-part, subject-predicate, existentially committed, with laws of thought [Aristotle, by Hanna]
Aristotelian sentences are made up by one of four 'formative' connectors [Aristotle, by Engelbretsen]
Aristotelian identified 256 possible syllogisms, saying that 19 are valid [Aristotle, by Devlin]
Aristotle replaced Plato's noun-verb form with unions of pairs of terms by one of four 'copulae' [Aristotle, by Engelbretsen/Sayward]
Aristotle listed nineteen valid syllogisms (though a few of them were wrong) [Aristotle, by Devlin]
4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic
Aristotle's said some Fs are G or some Fs are not G, forgetting that there might be no Fs [Bostock on Aristotle]
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
An axiom is a principle which must be understood if one is to learn anything [Aristotle]
Axioms are the underlying principles of everything, and who but the philosopher can assess their truth? [Aristotle]
The axioms of mathematics are part of philosophy [Aristotle]
4. Formal Logic / D. Modal Logic ML / 1. Modal Logic
Modal Square 1: □P and ¬◊¬P are 'contraries' of □¬P and ¬◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 2: ¬□¬P and ◊P are 'subcontraries' of ¬□P and ◊¬P [Aristotle, by Fitting/Mendelsohn]
Modal Square 3: □P and ¬◊¬P are 'contradictories' of ¬□P and ◊¬P [Aristotle, by Fitting/Mendelsohn]
Modal Square 4: □¬P and ¬◊P are 'contradictories' of ¬□¬P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 5: □P and ¬◊¬P are 'subalternatives' of ¬□¬P and ◊P [Aristotle, by Fitting/Mendelsohn]
Modal Square 6: □¬P and ¬◊P are 'subalternatives' of ¬□P and ◊¬P [Aristotle, by Fitting/Mendelsohn]
4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic
There are three different deductions for actual terms, necessary terms and possible terms [Aristotle]
4. Formal Logic / G. Formal Mereology / 1. Mereology
Are a part and whole one or many? Either way, what is the cause? [Aristotle]
Aristotle relativises the notion of wholeness to different measures [Aristotle, by Koslicki]
5. Theory of Logic / A. Overview of Logic / 3. Value of Logic
Logic teaches us how to order and connect our thoughts [Leibniz]
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
'Blind thought' is reasoning without recognition of the ingredients of the reasoning [Leibniz, by Arthur,R]
5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
Demonstrations by reductio assume excluded middle [Aristotle]
5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
Predications of predicates are predications of their subjects [Aristotle]
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
Something holds universally when it is proved of an arbitrary and primitive case [Aristotle]
5. Theory of Logic / B. Logical Consequence / 3. Deductive Consequence |-
Deduction is when we suppose one thing, and another necessarily follows [Aristotle]
5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism
At bottom eternal truths are all conditional [Leibniz]
5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence
In talking of future sea-fights, Aristotle rejects bivalence [Aristotle, by Williamson]
For Aristotle bivalence is a feature of reality [Aristotle, by Boulter]
5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
A prayer is a sentence which is neither true nor false [Aristotle]
Everything is either asserted or denied truly [Aristotle]
5. Theory of Logic / D. Assumptions for Logic / 3. Contradiction
Falsehood involves a contradiction, and truth is contradictory of falsehood [Leibniz]
5. Theory of Logic / E. Structures of Logic / 1. Logical Form
Aristotle places terms at opposite ends, joined by a quantified copula [Aristotle, by Sommers]
For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and
'Are Coriscus and Callias at home?' sounds like a single question, but it isn't [Aristotle]
5. Theory of Logic / E. Structures of Logic / 7. Predicates in Logic
Aristotle's logic is based on the subject/predicate distinction, which leads him to substances and properties [Aristotle, by Benardete,JA]
5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
People who can't apply names usually don't understand the thing to which it applies [Leibniz]
5. Theory of Logic / G. Quantification / 1. Quantification
Affirming/denying sentences are universal, particular, or indeterminate [Aristotle]
5. Theory of Logic / G. Quantification / 3. Objectual Quantification
Aristotelian logic has two quantifiers of the subject ('all' and 'some') [Aristotle, by Devlin]
5. Theory of Logic / K. Features of Logics / 1. Axiomatisation
Aristotle's axioms (unlike Euclid's) are assumptions awaiting proof [Aristotle, by Leibniz]
It is always good to reduce the number of axioms [Leibniz]
5. Theory of Logic / K. Features of Logics / 5. Incompleteness
We can assign a characteristic number to every single object [Leibniz]
5. Theory of Logic / L. Paradox / 2. Aporiai
Aporia 3: Does one science investigate all being, or does each kind of being have a science? [Aristotle, by Politis]
Puzzles arise when reasoning seems equal on both sides [Aristotle]
We must start with our puzzles, and progress by solving them, as they reveal the real difficulty [Aristotle]
Aporia 4: Does metaphysics just investigate pure being, or also the characteristics of being? [Aristotle, by Politis]
Aporia 1: is there one science of explanation, or many? [Aristotle, by Politis]
Aporia 2: Does one science investigate both ultimate and basic principles of being? [Aristotle, by Politis]
Aporia 5: Do other things exist besides what is perceptible by the senses? [Aristotle, by Politis]
Aporia 9: Is there one principle, or one kind of principle? [Aristotle, by Politis]
Aporia 6: Are the basic principles of a thing the kinds to which it belongs, or its components? [Aristotle, by Politis]
Aporia 7: Is a thing's kind the most general one, or the most specific one? [Aristotle, by Politis]
Aporia 8: Are there general kinds, or merely particulars? [Aristotle, by Politis]
Aporia 10: Do perishables and imperishables have the same principle? [Aristotle, by Politis]
Aporia 11: Are primary being and unity distinct, or only in the things that are? [Aristotle, by Politis]
Aporia 12: Do mathematical entities exist independently, or only in objects? [Aristotle, by Politis]
Aporia 13: Are there kinds, as well as particulars and mathematical entities? [Aristotle, by Politis]
Aporia 15: Are the causes of things universals or particulars? [Aristotle, by Politis]
Aporia 14: Are ultimate causes of things potentialities, or must they be actual? [Aristotle, by Politis]
6. Mathematics / A. Nature of Mathematics / 1. Mathematics
Mathematical precision is only possible in immaterial things [Aristotle]
Mathematics is concerned with forms, not with superficial properties [Aristotle]
Mathematics studies the domain of perceptible entities, but its subject-matter is not perceptible [Aristotle]
6. Mathematics / A. Nature of Mathematics / 2. Geometry
Circles must be bounded, so cannot be infinite [Leibniz]
Geometry studies naturally occurring lines, but not as they occur in nature [Aristotle]
The essence of a triangle comes from the line, mentioned in any account of triangles [Aristotle]
Geometry, unlike sensation, lets us glimpse eternal truths and their necessity [Leibniz]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / a. Numbers
We perceive number by the denial of continuity [Aristotle]
Perhaps numbers are substances? [Aristotle]
Pluralities divide into discontinous countables; magnitudes divide into continuous things [Aristotle]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / c. Priority of numbers
One is prior to two, because its existence is implied by two [Aristotle]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / g. Real numbers
Two is the least number, but there is no least magnitude, because it is always divisible [Aristotle]
Parts of a line join at a point, so it is continuous [Aristotle]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / m. One
The one in number just is the particular [Aristotle]
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / a. Units
Unit is the starting point of number [Aristotle]
A unit is what is quantitatively indivisible [Aristotle]
The unit is stipulated to be indivisible [Aristotle]
If only rectilinear figures existed, then unity would be the triangle [Aristotle]
Units came about when the unequals were equalised [Aristotle]
There is no multiplicity without true units [Leibniz]
Number cannot be defined as addition of ones, since that needs the number; it is a single act of abstraction [Fine,K on Leibniz]
Only whole numbers are multitudes of units [Leibniz]
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure
Two men do not make one thing, as well as themselves [Aristotle]
When we count, are we adding, or naming numbers? [Aristotle]
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / d. Counting via concepts
Are 'word token' and 'word type' different sorts of countable objects, or two ways of counting? [Geach, by Perry]
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / g. Applying mathematics
Everything is subsumed under number, which is a metaphysical statics of the universe, revealing powers [Leibniz]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / a. The Infinite
Without infinity time has limits, magnitudes are indivisible, and numbers come to an end [Aristotle]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / c. Potential infinite
Aristotle's infinity is a property of the counting process, that it has no natural limit [Aristotle, by Le Poidevin]
Infinity is only potential, never actual [Aristotle]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / d. Actual infinite
I strongly believe in the actual infinite, which indicates the perfections of its author [Leibniz]
I don't admit infinite numbers, and consider infinitesimals to be useful fictions [Leibniz]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / j. Infinite divisibility
Lengths do not contain infinite parts; parts are created by acts of division [Aristotle, by Le Poidevin]
A continuous line cannot be composed of indivisible points [Aristotle]
The continuum is not divided like sand, but folded like paper [Leibniz, by Arthur,R]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / k. Infinitesimals
Nature uses the infinite everywhere [Leibniz]
A tangent is a line connecting two points on a curve that are infinitely close together [Leibniz]
6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry
We shouldn't just accept Euclid's axioms, but try to demonstrate them [Leibniz]
6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / a. Axioms for numbers
We know mathematical axioms, such as subtracting equals from equals leaves equals, by a natural light [Leibniz]
6. Mathematics / B. Foundations for Mathematics / 5. Definitions of Number / b. Greek arithmetic
Number is plurality measured by unity [Aristotle]
The idea of 'one' is the foundation of number [Aristotle]
Each many is just ones, and is measured by the one [Aristotle]
Some quantities are discrete, like number, and others continuous, like lines, time and space [Aristotle]
6. Mathematics / B. Foundations for Mathematics / 7. Mathematical Structuralism / a. Structuralism
Mathematics studies abstracted relations, commensurability and proportion [Aristotle]
6. Mathematics / C. Sources of Mathematics / 1. Mathematical Platonism / a. For mathematical platonism
It is a simple truth that the objects of mathematics have being, of some sort [Aristotle]
6. Mathematics / C. Sources of Mathematics / 1. Mathematical Platonism / b. Against mathematical platonism
Aristotle removes ontology from mathematics, and replaces the true with the beautiful [Aristotle, by Badiou]
6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / a. Mathematical empiricism
Ten sheep and ten dogs are the same numerically, but it is not the same ten [Aristotle]
6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / c. Against mathematical empiricism
Abstraction from objects won't reveal an operation's being performed 'so many times' [Geach]
7. Existence / A. Nature of Existence / 2. Types of Existence
Existence is either potential or actual [Aristotle]
Some things exist as substances, others as properties of substances [Aristotle]
7. Existence / A. Nature of Existence / 3. Being / a. Nature of Being
There are four kinds of being: incidental, per se, potential and actual, and being as truth [Aristotle, by Wedin]
Being is either what falls in the categories, or what makes propositions true [Aristotle, by Aquinas]
Things are predicated of the basic thing, which isn't predicated of anything else [Aristotle]
There is only being in a certain way, and without that way there is no being [Aristotle]
Being, taken simply as being, is the domain of philosophy [Aristotle]
7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing
Non-existent things aren't made to exist by thought, because their non-existence is part of the thought [Aristotle]
7. Existence / A. Nature of Existence / 3. Being / f. Primary being
Primary being ('proté ousia') exists in virtue of itself, not in relation to other things [Aristotle, by Politis]
Primary being must be more than mere indeterminate ultimate subject of predication [Politis on Aristotle]
The three main candidates for primary being are particular, universal and essence; essence is the answer [Aristotle, by Politis]
Primary being is either universals, or the basis of predication, or essence [Aristotle, by Politis]
Non-primary beings lack essence, or only have a derived essence [Aristotle, by Politis]
Primary being is both the essence, and the subject of predication [Aristotle, by Politis]
7. Existence / A. Nature of Existence / 3. Being / g. Particular being
If nothing exists except individuals, how can there be a science of infinity? [Aristotle]
Being must be understood with reference to one primary sense - the being of substance [Aristotle, by Gill,ML]
Nothing is added to a man's existence by saying he is 'one', or that 'he exists' [Aristotle]
The primary subject seems to be substance, to the fullest extent [Aristotle]
Existence requires thisness, as quantity or quality [Aristotle]
Other types of being all depend on the being of substance [Aristotle]
There is no being unless it is determinate and well-defined [Aristotle, by Politis]
Aristotle discusses fundamental units of being, rather than existence questions [Aristotle, by Schaffer,J]
What is not truly one being is not truly a being either [Leibniz]
7. Existence / A. Nature of Existence / 3. Being / h. Dasein (being human)
The idea of being must come from our own existence [Leibniz]
7. Existence / A. Nature of Existence / 4. Abstract Existence
The incommensurability of the diagonal always exists, and so it is not in time [Aristotle]
7. Existence / A. Nature of Existence / 5. Reason for Existence
Maybe necessity and non-necessity are the first principles of ontology [Aristotle]
Possibles demand existence, so as many of them as possible must actually exist [Leibniz]
God's sufficient reason for choosing reality is in the fitness or perfection of possibilities [Leibniz]
Leibniz first asked 'why is there something rather than nothing?' [Leibniz, by Jacquette]
There must be a straining towards existence in the essence of all possible things [Leibniz]
Because something does exist, there must be a drive in possible things towards existence [Leibniz]
First: there must be reasons; Second: why anything at all?; Third: why this? [Leibniz]
7. Existence / A. Nature of Existence / 6. Criterion for Existence
What is not active is nothing [Leibniz]
7. Existence / B. Change in Existence / 1. Nature of Change
There are six kinds of change: generation, destruction, increase, diminution, alteration, change of place [Aristotle]
Change is the implied actuality of that which exists potentially [Aristotle]
True change is in a thing's logos or its matter, not in its qualities [Aristotle]
A change in qualities is mere alteration, not true change [Aristotle]
If the substratum persists, it is 'alteration'; if it doesn't, it is 'coming-to-be' or 'passing-away' [Aristotle]
Nature is an active principle of change, like potentiality, but it is intrinsic to things [Aristotle]
The sophists thought a man in the Lyceum is different from that man in the marketplace [Aristotle]
7. Existence / B. Change in Existence / 2. Processes
All comings-to-be are passings-away, and vice versa [Aristotle]
An actuality is usually thought to be a process [Aristotle]
7. Existence / C. Structure of Existence / 1. Grounding / c. Grounding and explanation
Aristotle's formal and material 'becauses' [aitiai] arguably involve grounding [Aristotle, by Correia/Schnieder]
7. Existence / C. Structure of Existence / 4. Ontological Dependence
A thing is prior to another if it implies its existence [Aristotle]
Of interdependent things, the prior one causes the other's existence [Aristotle]
What is prior is always potentially present in what is next in order [Aristotle]
Prior things can exist without posterior things, but not vice versa [Aristotle]
7. Existence / C. Structure of Existence / 5. Supervenience / a. Nature of supervenience
A thing 'expresses' another if they have a constant and fixed relationship [Leibniz]
7. Existence / C. Structure of Existence / 6. Fundamentals / c. Monads
Substances are in harmony, because they each express the one reality in themselves [Leibniz]
Leibniz proposes monads, since there must be basic things, which are immaterial in order to have unity [Leibniz, by Jolley]
Reality must be made of basic unities, which will be animated, substantial points [Leibniz]
A piece of flint contains something resembling perceptions and appetites [Leibniz]
Entelechies are analogous to souls, as other minds are analogous to our own minds [Leibniz]
Monads are not extended, but have a kind of situation in extension [Leibniz]
Only monads are substances, and bodies are collections of them [Leibniz]
All substances analyse down to simple substances, which are souls, or 'monads' [Leibniz]
A monad and its body are living, so life is everywhere, and comes in infinite degrees [Leibniz]
All simply substances are in harmony, because they all represent the one universe [Leibniz]
It is unclear in 'Monadology' how extended bodies relate to mind-like monads. [Garber on Leibniz]
Changes in a monad come from an internal principle, and the diversity within its substance [Leibniz]
A 'monad' has basic perception and appetite; a 'soul' has distinct perception and memory [Leibniz]
Without a substantial chain to link monads, they would just be coordinated dreams [Leibniz]
Monads do not make a unity unless a substantial chain is added to them [Leibniz]
Monads control nothing outside of themselves [Leibniz]
The monad idea incomprehensibly spiritualises matter, instead of materialising soul [La Mettrie on Leibniz]
He replaced Aristotelian continuants with monads [Leibniz, by Wiggins]
Is a drop of urine really an infinity of thinking monads? [Voltaire on Leibniz]
7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete
Objects of ideas can be divided into abstract and concrete, and then further subdivided [Leibniz]
7. Existence / D. Theories of Reality / 2. Realism
If experience is just a dream, it is still real enough if critical reason is never deceived [Leibniz]
The strongest criterion that phenomena show reality is success in prediction [Leibniz]
The division of nature into matter makes distinct appearances, and that presupposes substances [Leibniz]
The only indications of reality are agreement among phenomena, and their agreement with necessities [Leibniz]
7. Existence / D. Theories of Reality / 3. Reality
Knowledge of potential is universal and indefinite; of the actual it is definite and of individuals [Aristotle]
Only unities have any reality [Leibniz]
7. Existence / D. Theories of Reality / 6. Physicalism
Materialists cannot explain change [Aristotle, by Politis]
7. Existence / D. Theories of Reality / 10. Vagueness / b. Vagueness of reality
In actual things nothing is indefinite [Leibniz]
7. Existence / E. Categories / 3. Proposed Categories
Substance,Quantity,Quality,Relation,Place,Time,Being-in-a-position,Having,Doing,Being affected [Aristotle, by Westerhoff]
The categories (substance, quality, quantity, relation, action, passion, place, time) peter out inconsequentially [Benardete,JA on Aristotle]
There are ten basic categories for thinking about things [Aristotle]
There are ten categories: essence, quantity, quality, relation, place, time, position, state, activity, passivity [Aristotle]
The immediate divisions of that which is are genera, each with its science [Aristotle]
Have five categories - substance, quantity, quality, action/passion, relation - and their combinations [Leibniz]
7. Existence / E. Categories / 4. Category Realism
Aristotle derived categories as answers to basic questions about nature, size, quality, location etc. [Aristotle, by Gill,ML]
Our true divisions of nature match reality, but are probably incomplete [Leibniz]
8. Modes of Existence / A. Relations / 1. Nature of Relations
The separation from here to there is not the same as the separation from there to here [Aristotle]
Aristotle said relations are not substances, so (if they exist) they must be accidents [Aristotle, by Heil]
If relations can be reduced to, or supervene on, monadic properties of relata, they are not real [Leibniz, by Swoyer]
Relations aren't in any monad, so they are distributed, so they are not real [Leibniz]
A man's distant wife dying is a real change in him [Leibniz]
The ratio between two lines can't be a feature of one, and cannot be in both [Leibniz]
8. Modes of Existence / B. Properties / 1. Nature of Properties
An individual property has to exist (in past, present or future) [Aristotle]
There cannot be uninstantiated properties [Aristotle, by Macdonald,C]
Properties are just the ways in which forms are realised at various times [Aristotle, by Frede,M]
The 'propriae' or 'necessary accidents' of a thing are separate, and derived from the essence [Aristotle, by Koslicki]
8. Modes of Existence / B. Properties / 2. Need for Properties
For two things to differ in some respect, they must both possess that respect [Aristotle]
Aristotle promoted the importance of properties and objects (rather than general and particular) [Aristotle, by Frede,M]
8. Modes of Existence / B. Properties / 3. Types of Properties
An 'accident' is something which may possibly either belong or not belong to a thing [Aristotle]
8. Modes of Existence / B. Properties / 4. Intrinsic Properties
To seek truth, study the real connections between subjects and attributes [Aristotle]
8. Modes of Existence / B. Properties / 5. Natural Properties
For Aristotle, there are only as many properties as actually exist [Aristotle, by Jacquette]
8. Modes of Existence / B. Properties / 6. Categorical Properties
Some things said 'of' a subject are not 'in' the subject [Aristotle]
We call them secondary 'substances' because they reveal the primary substances [Aristotle]
8. Modes of Existence / B. Properties / 8. Properties as Modes
Whiteness can be explained without man, but femaleness cannot be explained without animal [Aristotle]
The features of a thing (whether quality or quantity) are inseparable from their subjects [Aristotle]
8. Modes of Existence / B. Properties / 9. Qualities
Four species of quality: states, capacities, affects, and forms [Aristotle, by Pasnau]
8. Modes of Existence / B. Properties / 10. Properties as Predicates
If we only saw bronze circles, would bronze be part of the concept of a circle? [Aristotle]
Attributes are functions, not objects; this distinguishes 'square of 2' from 'double of 2' [Geach]
8. Modes of Existence / C. Powers and Dispositions / 1. Powers
Heavy and light are defined by their tendency to move down or up [Aristotle]
Potentiality is a principle of change, in another thing, or as another thing [Aristotle]
Active 'dunamis' is best translated as 'power' or 'ability' (rather than 'potentiality') [Aristotle, by Gill,ML]
Because of the definitions of cause, effect and power, cause and effect have the same power [Leibniz]
Everything has a fixed power, as required by God, and by the possibility of reasoning [Leibniz]
The immediate cause of movements is more real [than geometry] [Leibniz]
We discern active power from our minds, so mind must be involved in all active powers [Leibniz]
I use the word 'entelechy' for a power, to include endeavour, as well as mere aptitude [Leibniz]
A complete monad is a substance with primitive active and passive power [Leibniz]
8. Modes of Existence / C. Powers and Dispositions / 2. Powers as Basic
The main characteristic of the source of change is activity [energeia] [Aristotle, by Politis]
As well as extension, bodies contain powers [Leibniz]
A substance contains the laws of its operations, and its actions come from its own depth [Leibniz]
The soul is not a substance but a substantial form, the first active faculty [Leibniz]
The most primitive thing in substances is force, which leads to their actions and dispositions [Leibniz]
All occurrence in the depth of a substance is spontaneous 'action' [Leibniz]
Substances are primary powers; their ways of being are the derivative powers [Leibniz]
Derivate forces are in phenomena, but primitive forces are in the internal strivings of substances [Leibniz]
Actualities are arranged by priority, going back to what initiates process [Aristotle]
8. Modes of Existence / C. Powers and Dispositions / 4. Powers as Essence
Sight is the essence of the eye, fitting its definition; the eye itself is just the matter [Aristotle]
Giving the function of a house defines its actuality [Aristotle]
Essence is primitive force, or a law of change [Leibniz]
The substantial form is the principle of action or the primitive force of acting [Leibniz]
Forms have sensation and appetite, the latter being the ability to act on other bodies [Leibniz, by Garber]
The essence of a thing is its real possibilities [Leibniz, by Cover/O'Leary-Hawthorne]
My formal unifying atoms are substantial forms, which are forces like appetites [Leibniz]
I call Aristotle's entelechies 'primitive forces', which originate activity [Leibniz]
Material or immaterial substances cannot be conceived without their essential activity [Leibniz]
Thought terminates in force, rather than extension [Leibniz]
There is active and passive power in the substantial chain and in the essence of a composite [Leibniz]
Primitive force is what gives a composite its reality [Leibniz]
8. Modes of Existence / C. Powers and Dispositions / 5. Powers and Properties
Potentiality in geometry is metaphorical [Aristotle]
The active powers which are not essential to the substance are the 'real qualities' [Leibniz]
8. Modes of Existence / C. Powers and Dispositions / 6. Dispositions / b. Dispositions and powers
There cannot be power without action; the power is a disposition to act [Leibniz]
8. Modes of Existence / C. Powers and Dispositions / 6. Dispositions / d. Dispositions as occurrent
Megaran actualism is just scepticism about the qualities of things [Aristotle]
Megaran actualists prevent anything from happening, by denying a capacity for it to happen! [Aristotle]
The Megarans say something is only capable of something when it is actually doing it [Aristotle]
8. Modes of Existence / D. Universals / 1. Universals
Substance is not a universal, as the former is particular but a universal is shared [Aristotle]
Universals are indeterminate and only known in potential, because they are general [Aristotle, by Witt]
8. Modes of Existence / D. Universals / 2. Need for Universals
Separate Forms aren't needed for logic, but universals (one holding of many) are essential [Aristotle]
The acquisition of scientific knowledge is impossible without universals [Aristotle]
8. Modes of Existence / D. Universals / 3. Instantiated Universals
No universals exist separately from particulars [Aristotle]
Colour must be in an individual body, or it is not embodied [Aristotle]
8. Modes of Existence / D. Universals / 6. Platonic Forms / a. Platonic Forms
Forms are said to be substances to which nothing is prior [Aristotle]
8. Modes of Existence / D. Universals / 6. Platonic Forms / b. Partaking
How can the Forms both be the substance of things and exist separately from them? [Aristotle]
If you accept Forms, you must accept the more powerful principle of 'participating' in them [Aristotle]
If partaking explains unity, what causes participating, and what is participating? [Aristotle]
There is a confusion because Forms are said to be universal, but also some Forms are separable and particular [Aristotle]
8. Modes of Existence / D. Universals / 6. Platonic Forms / c. Self-predication
Forms have to be their own paradigms, which seems to fuse the paradigm and the copy [Aristotle]
8. Modes of Existence / D. Universals / 6. Platonic Forms / d. Forms critiques
It is meaningless to speak of 'man-himself', because it has the same definition as plain 'man' [Aristotle]
All attempts to prove the Forms are either invalid, or prove Forms where there aren't supposed to be any [Aristotle]
Are there forms for everything, or for negations, or for destroyed things? [Aristotle]
If men exist by participating in two forms (Animal and Biped), they are plural, not unities [Aristotle]
Aristotle is not asserting facts about the location of properties, but about their ontological status [Aristotle, by Moreland]
The Forms have to be potentialities, not actual knowledge or movement [Aristotle]
Eternal white is no whiter than temporary white, and it is the same with goodness [Aristotle]
We can forget the Forms, as they are irrelevant, and not needed in giving demonstrations [Aristotle]
If two is part of three then numbers aren't Forms, because they would all be intermingled [Aristotle]
How will a vision of pure goodness make someone a better doctor? [Aristotle]
Predications only pick out kinds of things, not things in themselves [Aristotle]
There is no point at all in the theory of Forms unless it contains a principle that produces movement [Aristotle]
What possible contribution can the Forms make to perceptible entities? [Aristotle]
8. Modes of Existence / E. Nominalism / 1. Nominalism / b. Nominalism about universals
The thesis of the Form of the Good (or of anything else) is verbal and vacuous [Aristotle]
8. Modes of Existence / E. Nominalism / 4. Concept Nominalism
Abstracta are abbreviated ways of talking; there are just substances, and truths about them [Leibniz]
9. Objects / A. Existence of Objects / 1. Physical Objects
Aristotle gave up his earlier notion of individuals, because it relied on universals [Aristotle, by Frede,M]
Form and matter may not make up a concrete particular, because there are also accidents like weight [Aristotle, by Frede,M]
9. Objects / A. Existence of Objects / 2. Abstract Objects / a. Nature of abstracta
Objects lacking matter are intrinsic unities [Aristotle]
Real (non-logical) abstract terms are either essences or accidents [Leibniz]
9. Objects / A. Existence of Objects / 2. Abstract Objects / c. Modern abstracta
Wholly uniform things like space and numbers are mere abstractions [Leibniz]
9. Objects / A. Existence of Objects / 4. Impossible objects
Some philosophers say that in some qualified way non-existent things 'are' [Aristotle]
9. Objects / A. Existence of Objects / 5. Simples
The analysis of things leads to atoms of substance, which found both composition and action [Leibniz]
9. Objects / A. Existence of Objects / 5. Individuation / a. Individuation
Aristotle's form improves on being non-predicable as a way to identify a 'this' [Aristotle, by Wiggins]
The only way we can determine individuals is by keeping hold of them [Leibniz]
Things seem to be unified if we see duration, position, interaction and connection [Leibniz]
To know a thing is to know its primary cause or explanation [Aristotle]
Leibniz moved from individuation by whole entity to individuation by substantial form [Leibniz, by Garber]
9. Objects / A. Existence of Objects / 5. Individuation / b. Individuation by properties
If two individuals could be indistinguishable, there could be no principle of individuation [Leibniz]
The law of the series, which determines future states of a substance, is what individuates it [Leibniz]
9. Objects / A. Existence of Objects / 5. Individuation / c. Individuation by location
We use things to distinguish places and times, not vice versa [Leibniz]
A body is that which exists in space [Leibniz]
9. Objects / A. Existence of Objects / 5. Individuation / d. Individuation by haecceity
For Aristotle, things are not made individual by some essential distinguishing mark [Aristotle, by Frede,M]
The laws-of-the-series plays a haecceitist role [Leibniz, by Cover/O'Leary-Hawthorne]
No two things are quite the same, so there must be an internal principle of distinction [Leibniz]
9. Objects / A. Existence of Objects / 5. Individuation / e. Individuation by kind
Genus and species are substances, because only they reveal the primary substance [Aristotle, by Wedin]
Genus gives the essence better than the differentiae do [Aristotle]
Individuals within a species differ in their matter, form and motivating cause [Aristotle]
9. Objects / A. Existence of Objects / 6. Nihilism about Objects
Why are being terrestrial and a biped combined in the definition of man, but being literate and musical aren't? [Aristotle]
Fluidity is basic, and we divide into bodies according to our needs [Leibniz]
We should abandon absolute identity, confining it to within some category [Geach, by Hawthorne]
9. Objects / B. Unity of Objects / 1. Unifying an Object / a. Intrinsic unification
Aristotle says that the form is what makes an entity what it is [Aristotle, by Frede,M]
Things are one numerically in matter, formally in their account, generically in predicates, and by analogy in relations [Aristotle]
How is man a unity of animal and biped, especially if the Forms of animal and of biped exist? [Aristotle]
Primary things just are what-it-is-to-be-that-thing [Aristotle]
Things may be naturally unified because they involve an indivisible process [Aristotle]
The formal cause may be what unifies a substance [Aristotle]
Philosophy needs the precision of the unity given by substances [Leibniz]
Identity of a substance is the law of its persistence [Leibniz]
Natural objects include animals and their parts, plants, and the simple elements [Aristotle]
A unity may just be a particular, a numerically indivisible thing [Aristotle]
9. Objects / B. Unity of Objects / 1. Unifying an Object / b. Unifying aggregates
Things are unified by contact, mixture and position [Aristotle]
Things are one to the extent that they are indivisible [Aristotle]
Indivisibility is the cause of unity, either in movement, or in the account or thought [Aristotle]
A body would be endless disunited parts, if it did not have a unifying form or soul [Leibniz]
Accidental unity has degrees, from a mob to a society to a machine or organism [Leibniz]
9. Objects / B. Unity of Objects / 1. Unifying an Object / c. Unity as conceptual
Some things are unified by their account, which rests on a unified thought about the thing [Aristotle]
We find unity in reason, and unity in perception, but these are not true unity [Leibniz]
Leibniz bases pure primitive entities on conjunctions of qualitative properties [Leibniz, by Adams,RM]
To exist and be understood, a multitude must first be reduced to a unity [Leibniz]
9. Objects / B. Unity of Objects / 2. Substance / a. Substance
Substances have no opposites, and don't come in degrees (including if the substance is a man) [Aristotle]
Substance is not predicated of anything - but it still has something underlying it, that originates it [Aristotle]
We only infer underlying natures by analogy, observing bronze of a statue, or wood of a bed [Aristotle]
Is primary substance just an ultimate subject, or some aspect of a complex body? [Aristotle, by Gill,ML]
The substance is the cause of a thing's being [Aristotle]
Primary being is 'that which lies under', or 'particular substance' [Aristotle, by Politis]
Substance is prior in being separate, in definition, and in knowledge [Aristotle, by Witt]
It is wrong to translate 'ousia' as 'substance' [Aristotle, by Politis]
The complete notion of a substance implies all of its predicates or attributes [Leibniz]
Every substance is alive [Leibniz]
The baffling question of what exists is asking about the nature of substance [Aristotle]
'Ousia' is 'primary being' not 'primary substance' [Aristotle, by Politis]
A body is a unified aggregate, unless it has an indivisible substance [Leibniz]
Unity needs an indestructible substance, to contain everything which will happen to it [Leibniz]
Every bodily substance must have a soul, or something analogous to a soul [Leibniz]
The concept of forces or powers best reveals the true concept of substance [Leibniz]
The notion of substance is one of the keys to true philosophy [Leibniz]
Individuality is in the bond substance gives between past and future [Leibniz]
A single substance can receive contrary properties [Aristotle]
If substance is the basis of reality, then philosophy aims to understand substance [Aristotle]
The Pre-Socratics were studying the principles, elements and causes of substance [Aristotle]
9. Objects / B. Unity of Objects / 2. Substance / b. Need for substance
Aggregates don’t reduce to points, or atoms, or illusion, so must reduce to substance [Leibniz]
We may have to postulate unobservable and unknowable substances [Aristotle]
9. Objects / B. Unity of Objects / 2. Substance / c. Types of substance
Secondary substances do have subjects, so they are not ultimate in the ontology [Aristotle, by Frede,M]
In earlier Aristotle the substances were particulars, not kinds [Aristotle, by Lawson-Tancred]
Substance must necessarily involve progress and change [Leibniz]
A 'primary' substance is in each subject, with species or genera as 'secondary' substances [Aristotle]
Mature Aristotle sees organisms as the paradigm substances [Aristotle, by Pasnau]
Is a primary substance a foundation of existence, or the last stage of understanding? [Aristotle, by Gill,ML]
Substances mirror God or the universe, each from its own viewpoint [Leibniz]
Substances are everywhere in matter, like points in a line [Leibniz]
Elements and physical objects are substances, but ideas and mathematics are not so clear [Aristotle]
Units are positionless substances, and points are substances with position [Aristotle]
9. Objects / B. Unity of Objects / 2. Substance / d. Substance defined
Substances are essentially active [Leibniz, by Jolley]
Substance is a force for acting and being acted upon [Leibniz]
It is matter that turns out to be substance [ousia] [Aristotle]
Earlier Aristotle had objects as primary substances, but later he switched to substantial form [Aristotle, by Lowe]
Things are called 'substances' because they are subjects for everything else [Aristotle]
Substance [ousia] is the subject of predication and cause [aitia?] of something's existence [Aristotle]
Essence (fixed by definition) is also 'ousia', so 'ousia' is both ultimate subject, and a this-thing [Aristotle]
A substance is what-it-is-to-be, or the universal, or the genus, or the subject of saying [Aristotle]
Matter is not substance, because substance needs separability and thisness [Aristotle]
The substance is the form dwelling in the object [Aristotle]
Substance is unified and universals are diverse, so universals are not substance [Aristotle, by Witt]
A thing's substance is its primary cause of being [Aristotle]
None of the universals can be a substance [Aristotle]
Substance is that which can act [Leibniz]
In Aristotle, 'proté ousia' is 'primary being', and 'to hupokeimenon' is 'that which lies under' (or 'substance') [Aristotle, by Politis]
Substance is distinct being because of its unity [Aristotle, by Witt]
Leibnizian substances add concept, law, force, form and soul [Leibniz, by Cover/O'Leary-Hawthorne]
Substances cannot be bare, but have activity as their essence [Leibniz]
9. Objects / B. Unity of Objects / 2. Substance / e. Substance critique
If a substance is just a thing that has properties, it seems to be a characterless non-entity [Leibniz, by Macdonald,C]
9. Objects / B. Unity of Objects / 3. Unity Problems / c. Statue and clay
A nature is related to a substance as shapeless matter is to something which has a shape [Aristotle]
Statues depend on their bronze, but bronze doesn't depend on statues [Aristotle, by Gill,ML]
The statue is not called 'stone' but 'stoney' [Aristotle]
Primary matter and form make a unity, one in potentiality, the other in actuality [Aristotle]
9. Objects / B. Unity of Objects / 3. Unity Problems / d. Coincident objects
We can imagine two bodies interpenetrating, as two rays of light seem to [Leibniz]
9. Objects / B. Unity of Objects / 3. Unity Problems / e. Vague objects
The essence of baldness is vague and imperfect [Leibniz]
9. Objects / C. Structure of Objects / 2. Hylomorphism / a. Hylomorphism
Essences are not properties (since those can't cause individual substances) [Aristotle, by Witt]
Essential form is neither accidental nor necessary to matter, so it appears not to be a property [Aristotle, by Witt]
Aristotle's cosmos is ordered by form, and disordered by matter [Aristotle, by Gill,ML]
Aristotle moved from realism to nominalism about substances [Aristotle, by Frede,M]
A substance is a proper subject because the matter is a property of the form, not vice versa [Aristotle, by Gill,ML]
Aristotle doesn't think essential properties are those which must belong to a thing [Aristotle, by Kung]
Plato says changing things have no essence; Aristotle disagrees [Aristotle, by Politis]
Form, not matter, is a thing's nature, because it is actual, rather than potential [Aristotle]
The unmoved mover and the soul show Aristotelian form as the ultimate mereological atom [Aristotle, by Koslicki]
Scientists explain anger by the matter, dialecticians by the form and the account [Aristotle]
In 'Metaphysics' Z substantial primacy (as form) is explanatory rather than ontological [Aristotle, by Wedin]
In 'Metaphysics' substantial forms take over from objects as primary [Aristotle, by Frede,M]
Matter is potential, form is actual [Aristotle]
The form of a thing is its essence and its primary being [Aristotle]
Forms of sensible substances include unrealised possibilities, so are not fully actual [Aristotle, by Frede,M]
9. Objects / C. Structure of Objects / 2. Hylomorphism / b. Form as principle
Some forms, such as the Prime Mover, are held by Aristotle to exist without matter [Aristotle, by Gill,ML]
A true substance is constituted by some nature, which is a principle [Aristotle]
Forms are of no value in physics, but are indispensable in metaphysics [Leibniz]
9. Objects / C. Structure of Objects / 2. Hylomorphism / c. Form as causal
A thing's form and purpose are often the same, and form can be the initiator of change too [Aristotle]
Leibniz strengthened hylomorphism by connecting it to force in physics [Leibniz, by Garber]
9. Objects / C. Structure of Objects / 2. Hylomorphism / d. Form as unifier
The 'form' is the recipe for building wholes of a particular kind [Aristotle, by Koslicki]
Things are a unity because there is no clash between potential matter and actual shape/form [Aristotle]
Aristotle's solution to the problem of unity is that form is an active cause or potentiality or nature [Aristotle, by Gill,ML]
Form or soul gives unity and duration; matter gives multiplicity and change [Leibniz]
Unity of the form is just unity of the definition [Aristotle]
9. Objects / C. Structure of Objects / 3. Matter of an Object
In feature-generation the matter (such as bronze) endures, but in generation it doesn't [Aristotle, by Politis]
Matter is the substratum, which supports both coming-to-be and alteration [Aristotle]
Every distinct thing has matter, as long as it isn't an essence or a Form [Aristotle]
In Aristotle, bronze only becomes 'matter' when it is potentially a statue [Aristotle, by Gill,ML]
Aristotle's conception of matter applies to non-physical objects as well as physical objects [Aristotle, by Fine,K]
Aristotle's matter is something that could be the inner origin of a natural being's behaviour [Aristotle, by Witt]
Matter is secondary, because it is potential, determined by the actuality of form [Aristotle, by Witt]
9. Objects / C. Structure of Objects / 5. Composition of an Object
Is there a house over and above its bricks? [Aristotle]
9. Objects / C. Structure of Objects / 7. Substratum
It is unclear whether Aristotle believes in a propertyless subject, his 'ultimate matter' [Aristotle, by Lawson-Tancred]
A substrate is either a 'this' supporting qualities, or 'matter' supporting actuality [Aristotle]
A subject can't be nothing, so it must qualify as separate, and as having a distinct identity [Aristotle, by Gill,ML]
A 'substratum' is just a metaphor for whatever supports several predicates [Leibniz]
Something must pre-exist any new production [Aristotle]
If you extract all features of the object, what is left over? [Aristotle]
9. Objects / C. Structure of Objects / 8. Parts of Objects / a. Parts of objects
The contents of an explanatory formula are parts of the whole [Aristotle]
Indivisibles are not parts, but the extrema of parts [Leibniz]
9. Objects / C. Structure of Objects / 8. Parts of Objects / b. Sums of parts
A 'whole' (rather than a mere 'sum') requires an internal order which distinguishes it [Aristotle]
If a syllable is more than its elements, is the extra bit also an element? [Aristotle]
9. Objects / C. Structure of Objects / 8. Parts of Objects / c. Wholes from parts
There is no whole except for the parts [Aristotle]
A syllable is something different from its component vowels and consonants [Aristotle]
We first sense whole entities, and then move to particular parts of it [Aristotle]
The whole is prior to its parts, because parts are defined by their role [Aristotle]
In the case of a house the parts can exist without the whole, so parts are not the whole [Aristotle]
Wholes are continuous, rigid, uniform, similar, same kind, similar matter [Aristotle, by Simons]
9. Objects / D. Essence of Objects / 1. Essences of Objects
Aristotelian essence underlies behaviour, or underlies definition, or is the source of existence [Aristotle, by Aquinas]
Aristotelian essence is retained with identity through change, and bases our scientific knowledge [Aristotle, by Copi]
Aristotle says changing, material things (and not just universals) have an essence [Aristotle, by Politis]
Are essences actually universals? [Aristotle, by Politis]
The essence of a circle is the equality of its radii [Leibniz]
Subjects include predicates, so full understanding of subjects reveals all the predicates [Leibniz]
Basic predicates give the complete concept, which then predicts all of the actions [Leibniz]
Essences exist in the divine understanding [Leibniz]
A true being must (unlike a chain) have united parts, with a substantial form as its subject [Leibniz]
9. Objects / D. Essence of Objects / 2. Types of Essence
Aristotelian essences are causal, not classificatory [Aristotle, by Witt]
9. Objects / D. Essence of Objects / 3. Individual Essences
The essence of a single thing is the essence of a particular [Aristotle]
A primary substance reveals a 'this', which is an individual unit [Aristotle]
Particulars are not definable, because they fluctuate [Aristotle]
Essence is the cause of individual substance, and creates its unity [Aristotle, by Witt]
Individual essences are not universals, since those can't be substances, or cause them [Aristotle, by Witt]
Aristotelian essence is not universal properties, but individual essence [Aristotle, by Witt]
Aristotle does not accept individual essences; essential properties are always general [Aristotle, by Kung]
Aristotle's essence explains the existence of an individual substance, not its properties [Aristotle, by Witt]
Aristotle takes essence and form as a particular, not (as some claim) as a universal, the species [Aristotle, by Politis]
To be a subject a thing must be specifiable, with some essential properties [Aristotle, by Gill,ML]
Particular truths are just instances of general truths [Leibniz]
We can't know individuals, or determine their exact individuality [Leibniz]
Everything that is has one single essence [Aristotle]
9. Objects / D. Essence of Objects / 4. Essence as Definition
A thing's essence is what is mentioned in its definition [Aristotle, by Lawson-Tancred]
Essence is what is stated in the definition [Aristotle, by Politis]
Definitions recognise essences, so are not themselves essences [Aristotle]
If definition is of universals, many individuals have no definition, and hence no essence [Aristotle, by Witt]
Essence is just the possibility of a thing [Leibniz]
Things have an essence if their explanation is a definition [Aristotle]
9. Objects / D. Essence of Objects / 5. Essence as Kind
The Aristotelian view is that the essential properties are those that sort an object [Aristotle, by Marcus (Barcan)]
9. Objects / D. Essence of Objects / 6. Essence as Unifier
A thing's essence is its intrinsic nature [Aristotle]
An essence causes both its own unity and its kind [Aristotle]
Bodies need a soul (or something like it) to avoid being mere phenomena [Leibniz]
A substantial bond of powers is needed to unite composites, in addition to monads [Leibniz]
Having an essence is the criterion of being a substance [Aristotle, by Lawson-Tancred]
9. Objects / D. Essence of Objects / 7. Essence and Necessity / a. Essence as necessary properties
The essence is the necessary properties, and the concept includes what is contingent [Leibniz]
9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities
An 'idion' belongs uniquely to a thing, but is not part of its essence [Aristotle]
The complete concept of an individual includes contingent properties, as well as necessary ones [Leibniz]
A necessary feature (such as air for humans) is not therefore part of the essence [Leibniz]
9. Objects / D. Essence of Objects / 7. Essence and Necessity / c. Essentials are necessary
The predicates of a thing's nature are necessary to it [Aristotle]
Aristotle doesn't see essential truths or essential properties as necessary [Aristotle, by Koslicki]
9. Objects / D. Essence of Objects / 8. Essence as Explanatory
The four explanations are the main aspects of a thing's nature [Aristotle, by Moravcsik]
A thing's nature is what causes its changes and stability [Aristotle]
Primary substances are ontological in 'Categories', and explanatory in 'Metaphysics' [Aristotle, by Wedin]
Aristotelian essences are properties mentioned at the starting point of a science [Aristotle, by Kung]
Metaphysics is the science of ultimate explanation, or of pure existence, or of primary existence [Aristotle, by Politis]
If you fully understand a subject and its qualities, you see how the second derive from the first [Leibniz]
9. Objects / D. Essence of Objects / 9. Essence and Properties
It is absurd that a this and a substance should be composed of a quality [Aristotle]
The properties of a thing flow from its essence [Leibniz]
Leibniz's view (that all properties are essential) is extreme essentialism, not its denial [Leibniz, by Mackie,P]
9. Objects / D. Essence of Objects / 10. Essence as Species
Generic terms like 'man' are not substances, but qualities, relations, modes or some such thing [Aristotle]
Generalities like man and horse are not substances, but universal composites of account and matter [Aristotle]
Genera are not substances, and do not exist apart from the ingredient species [Aristotle]
'Categories' answers 'what?' with species, genus, differerentia; 'Met.' Z.17 seeks causal essence [Aristotle, by Wedin]
Standardly, Aristotelian essences are taken to be universals of the species [Aristotle, by Witt]
In 'Met.' he says genera can't be substances or qualities, so aren't in the ontology [Aristotle, by Frede,M]
Truths about species are eternal or necessary, but individual truths concern what exists [Leibniz]
For some sorts, a member of it is necessarily a member [Leibniz]
9. Objects / D. Essence of Objects / 11. Essence of Artefacts
Things are more unified if the unity comes from their own nature, not from external force [Aristotle]
The hallmark of an artefact is that its active source of maintenance is external [Aristotle, by Gill,ML]
9. Objects / D. Essence of Objects / 12. Essential Parts
The same whole ceases to exist if a part is lost [Leibniz]
A composite substance is a mere aggregate if its essence is just its parts [Leibniz]
9. Objects / D. Essence of Objects / 13. Nominal Essence
We have a distinct idea of gold, to define it, but not a perfect idea, to understand it [Leibniz]
If two people apply a single term to different resemblances, they refer to two different things [Leibniz]
Locke needs many instances to show a natural kind, but why not a single instance? [Leibniz, by Jolley]
9. Objects / D. Essence of Objects / 14. Knowledge of Essences
Aristotle claims that the individual is epistemologically prior to the universal [Aristotle, by Witt]
Actual knowledge is of the individual, and potential knowledge of the universal [Aristotle, by Witt]
Essence is the distinct thinkability of anything [Leibniz]
9. Objects / D. Essence of Objects / 15. Against Essentialism
Leibniz was not an essentialist [Leibniz, by Wiggins]
9. Objects / E. Objects over Time / 1. Objects over Time
Changeable accidents are modifications of unchanging essences [Leibniz]
9. Objects / E. Objects over Time / 2. Objects that Change
For animate things, only the form, not the matter or properties, must persist through change [Aristotle, by Frede,M]
Natural things are their own source of stability through change [Aristotle]
Coming to be is by shape-change, addition, subtraction, composition or alteration [Aristotle]
9. Objects / E. Objects over Time / 6. Successive Things
A day, or the games, has one thing after another, actually and potentially occurring [Aristotle]
9. Objects / E. Objects over Time / 9. Ship of Theseus
Bodies, like Theseus's ship, are only the same in appearance, and never strictly the same [Leibniz]
9. Objects / E. Objects over Time / 10. Beginning of an Object
Coming-to-be may be from nothing in a qualified way, as arising from an absence [Aristotle]
Does the pure 'this' come to be, or the 'this-such', or 'so-great', or 'somewhere'? [Aristotle]
Philosophers have worried about coming-to-be from nothing pre-existing [Aristotle]
The substratum changing to a contrary is the material cause of coming-to-be [Aristotle]
If a perceptible substratum persists, it is 'alteration'; coming-to-be is a complete change [Aristotle]
9. Objects / E. Objects over Time / 11. End of an Object
Destruction is dissolution of essence [Aristotle]
9. Objects / E. Objects over Time / 12. Origin as Essential
If two things are the same, they must have the same source and origin [Aristotle]
How a thing is generated does not explain its essence [Aristotle, by Politis]
Aristotle wants definition, not identity, so origin is not essential to him [Aristotle, by Witt]
9. Objects / F. Identity among Objects / 1. Concept of Identity
Two things with the same primary being and essence are one thing [Aristotle]
Inequality can be brought infinitely close to equality [Leibniz]
9. Objects / F. Identity among Objects / 3. Relative Identity
Denial of absolute identity has drastic implications for logic, semantics and set theory [Wasserman on Geach]
Identity is relative. One must not say things are 'the same', but 'the same A as' [Geach]
9. Objects / F. Identity among Objects / 4. Type Identity
Things such as two different quadrangles are alike but not wholly the same [Aristotle]
9. Objects / F. Identity among Objects / 5. Self-Identity
Aristotle denigrates the category of relation, but for modern absolutists self-relation is basic [Benardete,JA on Aristotle]
We can't understand self-identity without a prior grasp of the object [Aristotle]
You are one with yourself in form and matter [Aristotle]
9. Objects / F. Identity among Objects / 7. Indiscernible Objects
Two eggs can't be identical, because the same truths can't apply to both of them [Leibniz]
No two things are totally identical [Leibniz]
Things in different locations are different because they 'express' those locations [Leibniz]
In nature there aren't even two identical straight lines, so no two bodies are alike [Leibniz]
If two bodies only seem to differ in their position, those different environments will matter [Leibniz]
There must be some internal difference between any two beings in nature [Leibniz]
9. Objects / F. Identity among Objects / 8. Leibniz's Law
Only if two things are identical do they have the same attributes [Aristotle]
Leibniz's Law is incomplete, since it includes a non-relativized identity predicate [Geach, by Wasserman]
9. Objects / F. Identity among Objects / 9. Sameness
'Same' is mainly for names or definitions, but also for propria, and for accidents [Aristotle]
Two identical things have the same accidents, they are the same; if the accidents differ, they're different [Aristotle]
Numerical sameness and generic sameness are not the same [Aristotle]
Things are the same if one can be substituted for the other without loss of truth [Leibniz]
Being 'the same' is meaningless, unless we specify 'the same X' [Geach]
10. Modality / A. Necessity / 2. Nature of Necessity
What is necessary cannot be otherwise [Aristotle]
Necessity makes alternatives impossible [Aristotle]
Every necessary proposition is demonstrable to someone who understands [Leibniz]
Necessary truths are those provable from identities by pure logic in finite steps [Leibniz, by Hacking]
10. Modality / A. Necessity / 3. Types of Necessity
A stone travels upwards by a forced necessity, and downwards by natural necessity [Aristotle]
10. Modality / A. Necessity / 4. De re / De dicto modality
A deduction is necessary if the major (but not the minor) premise is also necessary [Aristotle]
10. Modality / A. Necessity / 6. Logical Necessity
Reasoning is when some results follow necessarily from certain claims [Aristotle]
A thing has a feature necessarily if its denial brings a contradiction [Aristotle]
10. Modality / A. Necessity / 7. Natural Necessity
The world is physically necessary, as its contrary would imply imperfection or moral absurdity [Leibniz]
10. Modality / B. Possibility / 1. Possibility
The actual must be possible, because it occurred [Aristotle]
There is a reason why not every possible thing exists [Leibniz]
Anything which is possible either exists or will come into existence [Aristotle]
How can things be incompatible, if all positive terms seem to be compatible? [Leibniz]
Possibility is when the necessity of the contrary is false [Aristotle]
10. Modality / B. Possibility / 4. Potentiality
A 'potentiality' is a principle of change or process in a thing [Aristotle]
Things are destroyed not by their powers, but by their lack of them [Aristotle]
Matter is potentiality [Aristotle, by Politis]
Potentialities are always for action, but are conditional on circumstances [Aristotle]
We recognise potentiality from actuality [Aristotle]
10. Modality / B. Possibility / 5. Contingency
A reason must be given why contingent beings should exist rather than not exist [Leibniz]
Necessary truths can be analysed into original truths; contingent truths are infinitely analysable [Leibniz]
10. Modality / B. Possibility / 7. Chance
Intrinsic cause is prior to coincidence, so nature and intelligence are primary causes, chance secondary [Aristotle]
Maybe there is no pure chance; a man's choices cause his chance meetings [Aristotle]
Chance is a coincidental cause among events involving purpose and choice [Aristotle]
10. Modality / C. Sources of Modality / 2. Necessity as Primitive
Some necessary truths are brute, and others derive from final causes [Leibniz]
10. Modality / C. Sources of Modality / 5. Modality from Actuality
A perfect idea of an object shows that the object is possible [Leibniz]
10. Modality / C. Sources of Modality / 6. Necessity from Essence
The two right angles of a triangle necessitate that a quadrilateral has four [Aristotle]
Some things have external causes of their necessity; others (the simple) generate necessities [Aristotle]
Aristotle's says necessary truths are distinct and derive from essential truths [Aristotle, by Koslicki]
10. Modality / D. Knowledge of Modality / 1. A Priori Necessary
Truths of reason are known by analysis, and are necessary; facts are contingent, and their opposites possible [Leibniz]
Intelligible truth is independent of any external things or experiences [Leibniz]
Proofs of necessity come from the understanding, where they have their source [Leibniz]
10. Modality / D. Knowledge of Modality / 2. A Priori Contingent
Only God sees contingent truths a priori [Leibniz]
If we understand God and his choices, we have a priori knowledge of contingent truths [Leibniz, by Garber]
10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / c. Possible but inconceivable
What we cannot imagine may still exist [Leibniz]
10. Modality / E. Possible worlds / 1. Possible Worlds / a. Possible worlds
Leibniz narrows down God's options to one, by non-contradiction, sufficient reason, indiscernibles, compossibility [Leibniz, by Harré]
Each monad expresses all its compatible monads; a possible world is the resulting equivalence class [Leibniz, by Rumfitt]
Leibniz proposed possible worlds, because they might be evil, where God would not create evil things [Leibniz, by Stewart,M]
The actual universe is the richest composite of what is possible [Leibniz]
There may be a world where dogs smell their game at a thousand leagues [Leibniz]
10. Modality / E. Possible worlds / 3. Transworld Objects / a. Transworld identity
If varieties of myself can be conceived of as distinct from me, then they are not me [Leibniz]
If someone's life went differently, then that would be another individual [Leibniz]
10. Modality / E. Possible worlds / 3. Transworld Objects / c. Counterparts
Leibniz has a counterpart view of de re counterfactuals [Leibniz, by Cover/O'Leary-Hawthorne]
10. Modality / E. Possible worlds / 3. Transworld Objects / d. Haecceitism
Leibniz is some form of haecceitist [Leibniz, by Cover/O'Leary-Hawthorne]
10. Modality / E. Possible worlds / 3. Transworld Objects / e. Possible Objects
If non-existents are possible, their existence would replace what now exists, which cannot therefore be necessary [Leibniz]
11. Knowledge Aims / A. Knowledge / 1. Knowledge
For Aristotle, knowledge is of causes, and is theoretical, practical or productive [Aristotle, by Code]
For Aristotle knowledge is explanatory, involving understanding, and principles or causes [Aristotle, by Witt]
'Episteme' means grasping causes, universal judgments, explanation, and teaching [Aristotle, by Witt]
The reason why is the key to knowledge [Aristotle]
The ability to teach is a mark of true knowledge [Aristotle]
Knowledge needs clarity, distinctness, and adequacy, and it should be intuitive [Leibniz]
Perfect knowledge implies complete explanations and perfect prediction [Leibniz]
11. Knowledge Aims / A. Knowledge / 2. Understanding
Understanding is the aim of our nature [Aristotle]
We understand a thing when we know its explanation and its necessity [Aristotle]
For Leibniz, divine understanding grasps every conceivable possibility [Leibniz, by Perkins]
We understand things when they are distinct, and we can derive necessities from them [Leibniz]
Some understanding, of immediate items, is indemonstrable [Aristotle]
Understanding grasps the agreements and disagreements of ideas [Leibniz]
Knowing is having knowledge; understanding is using knowledge [Aristotle]
We only understand something when we know its explanation [Aristotle]
11. Knowledge Aims / A. Knowledge / 4. Belief / c. Aim of beliefs
No one has mere belief about something if they think it HAS to be true [Aristotle]
Opinion is praised for being in accordance with truth [Aristotle]
11. Knowledge Aims / A. Knowledge / 6. Knowing How
Things are produced from skill if the form of them is in the mind [Aristotle]
Experience knows particulars, but only skill knows universals [Aristotle]
It takes skill to know causes, not experience [Aristotle]
11. Knowledge Aims / B. Certain Knowledge / 1. Certainty
Knowledge proceeds from principles, so it is hard to know if we know [Aristotle]
Certainty is where practical doubt is insane, or at least blameworthy [Leibniz]
11. Knowledge Aims / B. Certain Knowledge / 4. The Cogito
I cannot think my non-existence, nor exist without being myself [Leibniz]
To perceive or think is to be conscious of our existence [Aristotle]
11. Knowledge Aims / B. Certain Knowledge / 5. Cogito Critique
I can't just know myself to be a substance; I must distinguish myself from others, which is hard [Leibniz]
I know more than I think, since I know I think A then B then C [Leibniz]
The Cogito doesn't prove existence, because 'I am thinking' already includes 'I am' [Leibniz]
11. Knowledge Aims / C. Knowing Reality / 2. Phenomenalism
If we are dreaming, it is sufficient that the events are coherent, and obey laws [Leibniz]
11. Knowledge Aims / C. Knowing Reality / 3. Idealism / a. Idealism
A whole is just its parts, but there are no smallest parts, so only minds and perceptions exist [Leibniz]
Leibniz said dualism of mind and body is illusion, and there is only mind [Leibniz, by Martin/Barresi]
Leibniz is an idealist insofar as the basic components of his universe are all mental [Leibniz, by Jolley]
12. Knowledge Sources / A. A Priori Knowledge / 1. Nature of the A Priori
The notion of a priori truth is absent in Aristotle [Aristotle, by Politis]
12. Knowledge Sources / A. A Priori Knowledge / 2. Self-Evidence
Descartes needs to demonstrate how other people can attain his clear and distinct conceptions [Leibniz]
12. Knowledge Sources / A. A Priori Knowledge / 3. Innate Knowledge / a. Innate knowledge
Arithmetic and geometry are implicitly innate, awaiting revelation [Leibniz]
Children learn language fast, with little instruction and few definitions [Leibniz]
All of our thoughts come from within the soul, and not from the senses [Leibniz]
12. Knowledge Sources / A. A Priori Knowledge / 3. Innate Knowledge / c. Tabula rasa
The intellect has potential to think, like a tablet on which nothing has yet been written [Aristotle]
What is left of the 'blank page' if you remove the ideas? [Leibniz]
12. Knowledge Sources / A. A Priori Knowledge / 4. A Priori as Necessities
Mathematical analysis ends in primitive principles, which cannot be and need not be demonstrated [Leibniz]
An a priori proof is independent of experience [Leibniz]
12. Knowledge Sources / B. Perception / 1. Perception
Perception necessitates pleasure and pain, which necessitates appetite [Aristotle]
Why do we have many senses, and not just one? [Aristotle]
'Perception' is basic internal representation, and 'apperception' is reflective knowledge of perception [Leibniz]
Perception of sensible objects is virtually never wrong [Aristotle]
Why can't we sense the senses? And why do senses need stimuli? [Aristotle]
Sense organs aren't the end of sensation, or they would know what does the sensing [Aristotle]
You cannot understand anything through perception [Aristotle]
Our minds take on the form of what is being perceived [Aristotle, by Mares]
Not all of perception is accompanied by consciousness [Leibniz]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / b. Primary/secondary
Which of the contrary features of a body are basic to it? [Aristotle]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities
Many objects of sensation are common to all the senses [Aristotle]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities
Some objects of sensation are unique to one sense, where deception is impossible [Aristotle]
Some knowledge is lost if you lose a sense, and there is no way the knowledge can be replaced [Aristotle]
We know objects by perceptions, but their qualities don't reveal what it is we are perceiving [Leibniz]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / e. Primary/secondary critique
Light, heat and colour are apparent qualities, and so are motion, figure and extension [Leibniz]
Colour and pain must express the nature of their stimuli, without exact resemblance [Leibniz]
12. Knowledge Sources / B. Perception / 3. Representation
In moral thought images are essential, to be pursued or avoided [Aristotle]
A pain doesn't resemble the movement of a pin, but it resembles the bodily movement pins cause [Leibniz]
12. Knowledge Sources / B. Perception / 6. Inference in Perception
Particular facts (such as 'is it cooked?') are matters of sense-perception, not deliberation [Aristotle]
Truth arises among sensations from grounding reasons and from regularities [Leibniz]
12. Knowledge Sources / C. Rationalism / 1. Rationalism
Aristotle is a rationalist, but reason is slowly acquired through perception and experience [Aristotle, by Frede,M]
You may experience a universal truth, but only reason can tell you that it is always true [Leibniz]
We only believe in sensible things when reason helps the senses [Leibniz]
We all expect the sun to rise tomorrow by experience, but astronomers expect it by reason [Leibniz]
The senses are confused, and necessities come from distinct intellectual ideas [Leibniz]
We may think when we wish, but not perceive, because universals are within the mind [Aristotle]
12. Knowledge Sources / D. Empiricism / 1. Empiricism
There is nothing in the understanding but experiences, plus the understanding itself, and the understander [Leibniz]
12. Knowledge Sources / D. Empiricism / 4. Pro-Empiricism
All men long to understand, as shown by their delight in the senses [Aristotle]
12. Knowledge Sources / D. Empiricism / 5. Empiricism Critique
Knowledge doesn't just come from the senses; we know the self, substance, identity, being etc. [Leibniz]
Our sensation of green is a confused idea, like objects blurred by movement [Leibniz]
Aristotle's concepts of understanding and explanation mean he is not a pure empiricist [Aristotle, by Frede,M]
Animals may have some knowledge if they retain perception, but understanding requires reasons to be given [Aristotle]
12. Knowledge Sources / E. Direct Knowledge / 1. Common Sense
It is enough if we refute the objections and leave common opinions undisturbed [Aristotle]
If everyone believes it, it is true [Aristotle]
12. Knowledge Sources / E. Direct Knowledge / 2. Intuition
Intuition grasps the definitions that can't be proved [Aristotle]
Aristotle wants to fit common intuitions, and therefore uses language as a guide [Aristotle, by Gill,ML]
12. Knowledge Sources / E. Direct Knowledge / 4. Memory
Many memories of the same item form a single experience [Aristotle]
13. Knowledge Criteria / A. Justification Problems / 1. Justification / b. Need for justification
To know something we need understanding, which is grasp of the primary cause [Aristotle]
13. Knowledge Criteria / A. Justification Problems / 2. Justification Challenges / a. Agrippa's trilemma
Sceptics say justification is an infinite regress, or it stops at the unknowable [Aristotle]
13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / a. Foundationalism
Nothing should be taken as certain without foundations [Leibniz]
13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / b. Basic beliefs
When you understand basics, you can't be persuaded to change your mind [Aristotle]
13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / d. Rational foundations
Our thoughts are either dependent, or self-evident. All thoughts seem to end in the self-evident [Leibniz]
13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / e. Pro-foundations
The starting point of a proof is not a proof [Aristotle]
13. Knowledge Criteria / B. Internal Justification / 5. Coherentism / b. Pro-coherentism
Scientific truths are supported by mutual agreement, as well as agreement with the phenomena [Leibniz]
13. Knowledge Criteria / D. Scepticism / 1. Scepticism
Light takes time to reach us, so objects we see may now not exist [Leibniz]
13. Knowledge Criteria / D. Scepticism / 5. Dream Scepticism
Dreams aren't a serious problem. No one starts walking round Athens next morning, having dreamt that they were there! [Aristotle]
13. Knowledge Criteria / D. Scepticism / 6. Scepticism Critique
I don't recommend universal doubt; we constantly seek reasons for things which are indubitable [Leibniz]
13. Knowledge Criteria / E. Relativism / 2. Knowledge as Convention
Truth is mutually agreed perception [Leibniz]
13. Knowledge Criteria / E. Relativism / 3. Subjectivism
If truth is relative it is relational, and concerns appearances relative to a situation [Aristotle]
If relativism is individual, how can something look sweet and not taste it, or look different to our two eyes? [Aristotle]
13. Knowledge Criteria / E. Relativism / 6. Relativism Critique
If the majority had diseased taste, and only a few were healthy, relativists would have to prefer the former [Aristotle]
14. Science / A. Basis of Science / 2. Demonstration
There must be definitions before demonstration is possible [Aristotle]
There cannot be a science of accidentals, but only of general truths [Aristotle]
Demonstrations about particulars must be about everything of that type [Aristotle]
All demonstration is concerned with existence, axioms and properties [Aristotle]
Demonstration starts from a definition of essence, so we can derive (or conjecture about) the properties [Aristotle]
Demonstrations move from starting-points to deduced conclusions [Aristotle]
Demonstration is more than entailment, as the explanatory order must match the causal order [Aristotle, by Koslicki]
Aristotle gets asymmetric consequence from demonstration, which reflects real causal priority [Aristotle, by Koslicki]
Aristotle doesn't actually apply his theory of demonstration to his practical science [Leroi on Aristotle]
Premises must be true, primitive and immediate, and prior to and explanatory of conclusions [Aristotle]
We can know by demonstration, which is a scientific deduction leading to understanding [Aristotle]
Demonstrative understanding rests on necessary features of the thing in itself [Aristotle]
Demonstrations must be necessary, and that depends on the middle term [Aristotle]
Demonstrations are syllogisms which give explanations [Aristotle]
Universal demonstrations are about thought; particular demonstrations lead to perceptions [Aristotle]
Demonstration is better with fewer presuppositions, and it is quicker if these are familiar [Aristotle]
Aim to get definitions of the primitive components, thus establishing the kind, and work towards the attributes [Aristotle]
A demonstration is a deduction which proceeds from necessities [Aristotle]
The principles of demonstrations are definitions [Aristotle]
14. Science / A. Basis of Science / 4. Prediction
Successful prediction shows proficiency in nature [Leibniz]
14. Science / A. Basis of Science / 6. Falsification
A single counterexample is enough to prove that a truth is not necessary [Aristotle]
14. Science / B. Scientific Theories / 1. Scientific Theory
Plato says sciences are unified around Forms; Aristotle says they're unified around substance [Aristotle, by Moravcsik]
14. Science / C. Induction / 1. Induction
Induction is the progress from particulars to universals [Aristotle]
Nobody fears a disease which nobody has yet caught [Aristotle]
14. Science / C. Induction / 2. Aims of Induction
Hypotheses come from induction, which is comparison of experiences [Leibniz]
We learn universals from many particulars [Aristotle]
14. Science / C. Induction / 3. Limits of Induction
We say 'so in cases of this kind', but how do you decide what is 'of this kind'? [Aristotle]
The instances confirming a general truth are never enough to establish its necessity [Leibniz]
14. Science / D. Explanation / 1. Explanation / a. Explanation
What is most universal is furthest away, and the particulars are nearest [Aristotle]
Aristotelian explanations are facts, while modern explanations depend on human conceptions [Aristotle, by Politis]
Are particulars explained more by universals, or by other particulars? [Aristotle]
Universal principles are not primary beings, but particular principles are not universally knowable [Aristotle]
Universals are valuable because they make the explanations plain [Aristotle]
14. Science / D. Explanation / 1. Explanation / b. Aims of explanation
We know a thing if we grasp its first causes, principles and basic elements [Aristotle]
Explanation is of the status of a thing, inferences to it, initiation of change, and purpose [Aristotle]
Understanding moves from the less to the more intelligible [Aristotle]
What we seek and understand are facts, reasons, existence, and identity [Aristotle]
14. Science / D. Explanation / 2. Types of Explanation / a. Types of explanation
Four Explanations: the essence and form; the matter; the source; and the end [Aristotle, by Politis]
Aristotle's four 'causes' are four items which figure in basic explanations of nature [Aristotle, by Annas]
Science refers the question Why? to four causes/explanations: matter, form, source, purpose [Aristotle]
There are as many causes/explanations as there are different types of why-question [Aristotle]
Aristotelian explanations mainly divide things into natural kinds [Aristotle, by Politis]
Nature is explained by mathematics and mechanism, but the laws rest on metaphysics [Leibniz]
Aristotle's standard analysis of species and genus involves specifying things in terms of something more general [Aristotle, by Benardete,JA]
14. Science / D. Explanation / 2. Types of Explanation / e. Lawlike explanations
Chance is inexplicable, because we can only explain what happens always or usually [Aristotle]
Explanation and generality are inseparable [Aristotle, by Wedin]
14. Science / D. Explanation / 2. Types of Explanation / g. Causal explanations
The foundation or source is stronger than the thing it causes [Aristotle]
Minds are best explained by their ends, and bodies by efficient causes [Leibniz]
To grasp something, trace it back to its natural origins [Aristotle]
14. Science / D. Explanation / 2. Types of Explanation / h. Explanations by function
Final causes can help with explanations in physics [Leibniz]
To explain a house we must describe its use, as well as its parts [Leibniz]
14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence
The cause of a change is not the real influence, but whatever gives a reason for the change [Leibniz]
The essence of substance is the law of its changes, as in the series of numbers [Leibniz]
We will only connect our various definitions of gold when we understand it more deeply [Leibniz]
Aristotelian explanation by essence may need to draw on knowledge of other essences [Aristotle, by Koslicki]
The nature of each thing is its mature state [Aristotle]
Aristotle regularly says that essential properties explain other significant properties [Aristotle, by Kung]
To understand a triangle summing to two right angles, we need to know the essence of a line [Aristotle]
We know something when we fully know what it is, not just its quality, quantity or location [Aristotle]
Real enquiries seek causes, and causes are essences [Aristotle]
We know a thing when we grasp its essence [Aristotle]
The explanation is what gives matter its state, which is the form, which is the substance [Aristotle]
Essential properties explain in conjunction with properties shared by the same kind [Aristotle, by Kung]
To fully conceive the subject is to explain the resulting predicates and events [Leibniz]
14. Science / D. Explanation / 3. Best Explanation / a. Best explanation
Universals give better explanations, because they are self-explanatory and primitive [Aristotle]
The Copernican theory is right because it is the only one offering a good explanation [Leibniz]
14. Science / D. Explanation / 3. Best Explanation / b. Ultimate explanation
Nature can be fully explained by final causes alone, or by efficient causes alone [Leibniz]
15. Nature of Minds / A. Nature of Mind / 1. Mind / b. Purpose of mind
Mind is a thinking substance which can know God and eternal truths [Leibniz]
15. Nature of Minds / A. Nature of Mind / 1. Mind / c. Features of mind
Mind involves movement, perception, incorporeality [Aristotle]
15. Nature of Minds / A. Nature of Mind / 2. Psuche
Everything that receives nourishment has a vegetative soul, with it own distinctive excellence [Aristotle]
In a controlled person the receptive part of the soul is obedient, and it is in harmony in the virtuous [Aristotle]
The irrational psuché is persuadable by reason - shown by our criticism and encouragement of people [Aristotle]
If beings are dominated by appetite, this can increase so much that it drives out reason [Aristotle]
Aristotle led to the view that there are several souls, all somewhat physical [Aristotle, by Martin/Barresi]
Soul is seen as what moves, or what is least physical, or a combination of elements [Aristotle]
Psuché is the form and actuality of a body which potentially has life [Aristotle]
The soul is the cause or source of movement, the essence of body, and its end [Aristotle]
15. Nature of Minds / A. Nature of Mind / 5. Unity of Mind
Understanding is impossible, if it involves the understanding having parts [Aristotle]
The rational and irrational parts of the soul are either truly separate, or merely described that way [Aristotle]
If the soul is composed of many physical parts, it can't be a true unity [Aristotle]
If a soul have parts, what unites them? [Aristotle]
What unifies the soul would have to be a super-soul, which seems absurd [Aristotle]
No machine or mere organised matter could have a unified self [Leibniz]
15. Nature of Minds / A. Nature of Mind / 6. Anti-Individualism
In a way the soul is everything which exists, through its perceptions and thoughts [Aristotle]
15. Nature of Minds / A. Nature of Mind / 7. Animal Minds
Animal thought is a shadow of reasoning, connecting sequences of images by imagination [Leibniz]
Animals are semi-rational because they connect facts, but they don't see causes [Leibniz]
It seems probable that animals have souls, but not consciousness [Leibniz]
15. Nature of Minds / A. Nature of Mind / 8. Brain
The brain has no responsibility for sensations, which occur in the heart [Aristotle]
15. Nature of Minds / B. Features of Minds / 1. Consciousness / a. Consciousness
Leibniz introduced the idea of degrees of consciousness, essential for his monads [Leibniz, by Perkins]
15. Nature of Minds / B. Features of Minds / 1. Consciousness / c. Parts of consciousness
Our large perceptions and appetites are made up tiny unconscious fragments [Leibniz]
15. Nature of Minds / B. Features of Minds / 2. Unconscious Mind
It is a serious mistake to think that we are aware of all of our perceptions [Leibniz]
The soul doesn't understand many of its own actions, if perceptions are confused and desires buried [Leibniz]
15. Nature of Minds / B. Features of Minds / 3. Privacy
Increase a conscious machine to the size of a mill - you still won't see perceptions in it [Leibniz]
15. Nature of Minds / C. Capacities of Minds / 1. Faculties
Courage from spirit is natural and unconquerable, as seen in the young [Aristotle]
Whether the mind has parts is irrelevant, since it obviously has distinct capacities [Aristotle]
If we divide the mind up according to its capacities, there are a lot of them [Aristotle]
15. Nature of Minds / C. Capacities of Minds / 2. Imagination
Self-moving animals must have desires, and that entails having imagination [Aristotle]
15. Nature of Minds / C. Capacities of Minds / 3. Abstraction by mind
A big flea is a small animal, so 'big' and 'small' cannot be acquired by abstraction [Geach]
We cannot learn relations by abstraction, because their converse must be learned too [Geach]
15. Nature of Minds / C. Capacities of Minds / 5. Generalisation by mind
Linguistic terms form a hierarchy, with higher terms predicable of increasing numbers of things [Aristotle, by Engelbretsen]
Perception creates primitive immediate principles by building a series of firm concepts [Aristotle]
A perception lodging in the soul creates a primitive universal, which becomes generalised [Aristotle]
Skill comes from a general assumption obtained from thinking about similar things [Aristotle]
Aristotle distinguishes two different sorts of generality - kinds, and properties [Aristotle, by Frede,M]
Abstraction attends to the general, not the particular, and involves universal truths [Leibniz]
If concepts are just recognitional, then general judgements would be impossible [Geach]
15. Nature of Minds / C. Capacities of Minds / 6. Idealisation
Science is more accurate when it is prior and simpler, especially without magnitude or movement [Aristotle]
15. Nature of Minds / C. Capacities of Minds / 10. Conatus/Striving
Active force is not just potential for action, since it involves a real effort or striving [Leibniz]
Volition automatically endeavours to move towards what it sees as good (and away from bad) [Leibniz]
Primitive forces are internal strivings of substances, acting according to their internal laws [Leibniz]
16. Persons / B. Nature of the Self / 4. Presupposition of Self
The nature of all animate things is to have one part which rules it [Aristotle]
16. Persons / C. Self-Awareness / 2. Knowing the Self
We know the 'I' and its contents by abstraction from awareness of necessary truths [Leibniz]
16. Persons / D. Continuity of the Self / 1. Identity and the Self
Is Socrates the same person when standing and when seated? [Aristotle]
16. Persons / D. Continuity of the Self / 2. Mental Continuity / a. Memory is Self
If a person's memories became totally those of the King of China, he would be the King of China [Leibniz]
Memory doesn't make identity; a man who relearned everything would still be the same man [Leibniz]
16. Persons / D. Continuity of the Self / 2. Mental Continuity / b. Self as mental continuity
We know our own identity by psychological continuity, even if there are some gaps [Leibniz]
16. Persons / D. Continuity of the Self / 7. Self and Thinking
It would seem that the thinking part is the individual self [Aristotle]
16. Persons / F. Free Will / 1. Nature of Free Will
Future contingent events are certain, because God foresees them, but that doesn't make them necessary [Leibniz]
Aristotle never discusses free will [Aristotle, by MacIntyre]
For an action to be 'free', it must be deliberate as well as unconstrained [Aristotle, by Leibniz]
A human being fathers his own actions as he fathers his children [Aristotle]
16. Persons / F. Free Will / 3. Constraints on the will
A man is the cause of what is within his power, and what he causes is in his power [Aristotle]
16. Persons / F. Free Will / 4. For Free Will
Only a human being can be a starting point for an action [Aristotle]
16. Persons / F. Free Will / 5. Against Free Will
Aristotle assesses whether people are responsible, and if they are it was voluntary [Aristotle, by Zagzebski]
If we know what is good or rational, our knowledge is extended, and our free will restricted [Leibniz]
Saying we must will whatever we decide to will leads to an infinite regress [Leibniz]
16. Persons / F. Free Will / 6. Determinism / a. Determinism
People argue for God's free will, but it isn't needed if God acts in perfection following supreme reason [Leibniz]
We think we are free because the causes of the will are unknown; determinism is a false problem [Leibniz]
16. Persons / F. Free Will / 6. Determinism / b. Fate
Sloth's Syllogism: either it can't happen, or it is inevitable without my effort [Leibniz]
16. Persons / F. Free Will / 7. Compatibilism
Everything which happens is not necessary, but is certain after God chooses this universe [Leibniz]
The will determines action, by what is seen as good, but it does not necessitate it [Leibniz]
17. Mind and Body / A. Mind-Body Dualism / 1. Dualism
Emotion involves the body, thinking uses the mind, imagination hovers between them [Aristotle]
Soul represents body, but soul remains unchanged, while body continuously changes [Leibniz]
17. Mind and Body / A. Mind-Body Dualism / 2. Interactionism
The soul (or parts of it) is not separable from the body [Aristotle]
All the emotions seem to involve the body, simultaneously with the feeling [Aristotle]
17. Mind and Body / A. Mind-Body Dualism / 3. Panpsychism
Something rather like souls (though not intelligent) could be found everywhere [Leibniz]
Every body contains a kind of sense and appetite, or a soul [Leibniz]
Leibniz has a panpsychist view that physical points are spiritual [Leibniz, by Martin/Barresi]
17. Mind and Body / A. Mind-Body Dualism / 4. Occasionalism
Mind and body can't influence one another, but God wouldn't intervene in the daily routine [Leibniz]
Occasionalism give a false view of natural laws, miracles, and substances [Leibniz, by Jolley]
17. Mind and Body / A. Mind-Body Dualism / 5. Parallelism
Assume that mind and body follow their own laws, but God has harmonised them [Leibniz]
Maybe mind and body are parallel, like two good clocks [Leibniz]
The soul does know bodies, although they do not influence one another [Leibniz]
We should say that body is mechanism and soul is immaterial, asserting their independence [Leibniz]
Souls act as if there were no bodies, and bodies act as if there were no souls [Leibniz]
Perfections of soul subordinate the body, but imperfections of soul submit to the body [Leibniz]
17. Mind and Body / A. Mind-Body Dualism / 7. Zombies
It's impossible, but imagine a body carrying on normally, but with no mind [Leibniz]
17. Mind and Body / A. Mind-Body Dualism / 8. Dualism of Mind Critique
Thinkers place the soul within the body, but never explain how they are attached [Aristotle]
Early thinkers concentrate on the soul but ignore the body, as if it didn't matter what body received the soul [Aristotle]
If soul is separate from body, why does it die when the body dies? [Aristotle]
17. Mind and Body / B. Behaviourism / 2. Potential Behaviour
You can't define real mental states in terms of behaviour that never happens [Geach]
17. Mind and Body / B. Behaviourism / 4. Behaviourism Critique
Beliefs aren't tied to particular behaviours [Geach]
17. Mind and Body / C. Functionalism / 1. Functionalism
Aristotle has a problem fitting his separate reason into the soul, which is said to be the form of the body [Ackrill on Aristotle]
Does the mind think or pity, or does the whole man do these things? [Aristotle]
17. Mind and Body / E. Mind as Physical / 1. Physical Mind
The soul and the body are inseparable, like the imprint in some wax [Aristotle]
18. Thought / A. Modes of Thought / 1. Thought
The attainment of truth is the task of the intellectual part of the soul [Aristotle]
Thinking is not perceiving, but takes the form of imagination and speculation [Aristotle]
18. Thought / A. Modes of Thought / 3. Emotions / c. Role of emotions
Passions reside in confused perceptions [Leibniz]
18. Thought / A. Modes of Thought / 3. Emotions / d. Emotional feeling
Some emotional states are too strong for human nature [Aristotle]
18. Thought / A. Modes of Thought / 3. Emotions / f. Emotion and reason
Every feeling is the perception of a truth [Leibniz]
18. Thought / A. Modes of Thought / 3. Emotions / g. Controlling emotions
There is a mean of feelings, as in our responses to the good or bad fortune of others [Aristotle]
Nearly all the good and bad states of character are concerned with feelings [Aristotle]
18. Thought / A. Modes of Thought / 5. Rationality / a. Rationality
Aristotle gives a superior account of rationality, because he allows emotions to participate [Hursthouse on Aristotle]
18. Thought / A. Modes of Thought / 5. Rationality / b. Human rationality
Assume our reason is in two parts, one for permanent first principles, and one for variable things [Aristotle]
Aristotle makes belief a part of reason, but sees desires as separate [Aristotle, by Sorabji]
Aristotle sees reason as much more specific than our more everyday concept of it [Aristotle, by Frede,M]
18. Thought / A. Modes of Thought / 5. Rationality / c. Animal rationality
Aristotle and the Stoics denied rationality to animals, while Platonists affirmed it [Aristotle, by Sorabji]
Animals live by sensations, and some have good memories, but they don't connect experiences [Aristotle]
18. Thought / B. Mechanics of Thought / 5. Mental Files
Many memories make up a single experience [Aristotle]
18. Thought / C. Content / 2. Ideas
By an 'idea' I mean not an actual thought, but the resources we can draw on to think [Leibniz]
True ideas represent what is possible; false ideas represent contradictions [Leibniz]
An idea is an independent inner object, which expresses the qualities of things [Leibniz]
We must distinguish images from exact defined ideas [Leibniz]
Thoughts correspond to sensations, but ideas are independent of thoughts [Leibniz]
The idea of green seems simple, but it must be compounded of the ideas of blue and yellow [Leibniz]
18. Thought / C. Content / 6. Broad Content
The name 'gold' means what we know of gold, and also further facts about it which only others know [Leibniz]
The word 'gold' means a hidden constitution known to experts, and not just its appearances [Leibniz]
18. Thought / D. Concepts / 1. Concepts / a. Nature of concepts
Concepts are what unite a proposition [Leibniz]
18. Thought / D. Concepts / 2. Origin of Concepts / a. Origin of concepts
The mind does not lift concepts from experience; it creates them, and then applies them [Geach]
Concepts are ordered, and show eternal possibilities, deriving from God [Leibniz, by Arthur,R]
18. Thought / D. Concepts / 3. Ontology of Concepts / a. Concepts as representations
Our notions may be formed from concepts, but concepts are formed from things [Leibniz]
18. Thought / D. Concepts / 3. Ontology of Concepts / b. Concepts as abilities
For abstractionists, concepts are capacities to recognise recurrent features of the world [Geach]
18. Thought / D. Concepts / 4. Structure of Concepts / i. Conceptual priority
It is unclear whether acute angles are prior to right angles, or fingers to men [Aristotle]
18. Thought / D. Concepts / 5. Concepts and Language / c. Concepts without language
If someone has aphasia but can still play chess, they clearly have concepts [Geach]
18. Thought / E. Abstraction / 2. Abstracta by Selection
You can't abstract natural properties to make Forms - objects and attributes are defined together [Aristotle]
We learn primitives and universals by induction from perceptions [Aristotle]
18. Thought / E. Abstraction / 3. Abstracta by Ignoring
Mathematicians study what is conceptually separable, and doesn't lead to error [Aristotle]
Mathematicians study quantity and continuity, and remove the perceptible features of things [Aristotle]
Mathematicians suppose inseparable aspects to be separable, and study them in isolation [Aristotle]
Universals are just abstractions by concealing some of the circumstances [Leibniz]
'Abstractionism' is acquiring a concept by picking out one experience amongst a group [Geach]
18. Thought / E. Abstraction / 8. Abstractionism Critique
'Or' and 'not' are not to be found in the sensible world, or even in the world of inner experience [Geach]
We can't acquire number-concepts by extracting the number from the things being counted [Geach]
Abstractionists can't explain counting, because it must precede experience of objects [Geach]
The numbers don't exist in nature, so they cannot have been abstracted from there into our languages [Geach]
Blind people can use colour words like 'red' perfectly intelligently [Geach]
If 'black' and 'cat' can be used in the absence of such objects, how can such usage be abstracted? [Geach]
We can form two different abstract concepts that apply to a single unified experience [Geach]
The abstractionist cannot explain 'some' and 'not' [Geach]
Only a judgement can distinguish 'striking' from 'being struck' [Geach]
If health happened to be white, the science of health would not study whiteness [Aristotle]
19. Language / A. Nature of Meaning / 2. Meaning as Mental
For Aristotle meaning and reference are linked to concepts [Aristotle, by Putnam]
19. Language / A. Nature of Meaning / 7. Meaning Holism / a. Sentence meaning
Leibniz was the first modern to focus on sentence-sized units (where empiricists preferred word-size) [Leibniz, by Hart,WD]
19. Language / C. Assigning Meanings / 3. Predicates
Predicates are substance, quality, place, relation, quantity and action or affection [Aristotle]
Only what can be said of many things is a predicable [Aristotle, by Wedin]
Some predicates signify qualification of a substance, others the substance itself [Aristotle]
19. Language / D. Propositions / 4. Mental Propositions
Spoken sounds vary between people, but are signs of affections of soul, which are the same for all [Aristotle]
19. Language / E. Analyticity / 2. Analytic Truths
The notion of analytic truth is absent in Aristotle [Aristotle, by Politis]
19. Language / F. Communication / 1. Rhetoric
Rhetoric now enables good speakers to become popular leaders [Aristotle]
Rhetoric is a political offshoot of dialectic and ethics [Aristotle]
19. Language / F. Communication / 3. Denial
It doesn't have to be the case that in opposed views one is true and the other false [Aristotle]
Negation takes something away from something [Aristotle]
19. Language / F. Communication / 6. Interpreting Language / d. Metaphor
If you shouldn't argue in metaphors, then you shouldn't try to define them either [Aristotle]
20. Action / B. Preliminaries of Action / 1. Intention to Act / a. Nature of intentions
Not all actions aim at some good; akratic actions, for example, do not [Burnyeat on Aristotle]
20. Action / B. Preliminaries of Action / 2. Willed Action / a. Will to Act
Choice is not explained by the will, but by the operation of reason when it judges what is good [Aristotle, by Frede,M]
The idea of the will includes the understanding [Leibniz]
Will is an inclination to pursue something good [Leibniz]
20. Action / B. Preliminaries of Action / 2. Willed Action / c. Agent causation
An action is voluntary if the limb movements originate in the agent [Aristotle]
Deliberation ends when the starting-point of an action is traced back to the dominant part of the self [Aristotle]
20. Action / B. Preliminaries of Action / 2. Willed Action / d. Weakness of will
Aristotle seems not to explain why the better syllogism is overcome in akratic actions [Burnyeat on Aristotle]
A community can lack self-control [Aristotle]
The akrates acts from desire not choice, and the enkrates acts from choice not desire [Aristotle]
Virtue is right reason and feeling and action. Akrasia and enkrateia are lower levels of action. [Aristotle, by Cottingham]
Akrasia merely neglects or misunderstands knowledge, rather than opposing it [Achtenberg on Aristotle]
Some people explain akrasia by saying only opinion is present, not knowledge [Aristotle]
A person may act against one part of his knowledge, if he knows both universal and particular [Aristotle]
Aristotle sees akrasia as acting against what is chosen, not against reason [Aristotle, by Frede,M]
Akrasia is explained by past mental failures, not by a specific choice [Aristotle, by Frede,M]
Licentious people feel no regret, but weak-willed people are capable of repentance [Aristotle]
Akrasia is the clash of two feelings - goodness and pleasure [Aristotle]
Self-controlled follow understanding, when it is opposed to desires [Aristotle]
Limited awareness leads to bad choices, and unconscious awareness makes us choose the bad [Leibniz, by Perkins]
20. Action / C. Motives for Action / 2. Acting on Beliefs / a. Acting on beliefs
Choice results when deliberation brings together an opinion with an inclination [Aristotle]
20. Action / C. Motives for Action / 3. Acting on Reason / a. Practical reason
Prudence is mainly concerned with particulars, which is the sphere of human conduct [Aristotle]
Virtue ensures that we have correct aims, and prudence that we have correct means of achieving them [Aristotle]
One cannot be prudent without being good [Aristotle]
The one virtue of prudence carries with it the possession of all the other virtues [Aristotle]
Unlike in inanimate things, in animate things actions have more than one starting point [Aristotle]
The deliberative part of the soul discerns explanatory causes [Aristotle]
We follow the practical rule which always seeks maximum effect for minimum cost [Leibniz]
We deliberate about means, not ends [Aristotle]
Practical reason is truth-attaining, and focused on actions good for human beings [Aristotle]
Seeing particulars as parts of larger wholes is to perceive their value [Achtenberg on Aristotle]
Practical intellect serves to arrive at the truth which corresponds to right appetite [Aristotle]
20. Action / C. Motives for Action / 3. Acting on Reason / b. Intellectualism
Bad people are just ignorant of what they ought to do [Aristotle]
Some people are good at forming opinions, but bad at making moral choices [Aristotle]
For Socrates virtues are principles, involving knowledge, but we say they only imply the principle of practical reason [Aristotle]
20. Action / C. Motives for Action / 3. Acting on Reason / c. Reasons as causes
We assign the cause of someone's walking when we say why they are doing it [Aristotle]
Our reasoned acts are held to be voluntary and our own doing [Aristotle]
20. Action / C. Motives for Action / 4. Responsibility for Actions
If you repent of an act done through ignorance, you acted involuntarily, not non-voluntarily [Aristotle]
An action is voluntary when it is accompanied by thought of some kind [Aristotle]
For Aristotle responsibility seems negative, in the absence of force or ignorance [Irwin on Aristotle]
We are responsible if our actions reflect our motivation [Aristotle, by Frede,M]
20. Action / C. Motives for Action / 5. Action Dilemmas / a. Dilemmas
A man should sooner die than do some dreadful things, no matter how cruel the death [Aristotle]
21. Aesthetics / A. Aesthetic Experience / 3. Taste
If would be absurd not to disagree with someone's taste if it was a taste for poisons [Leibniz]
21. Aesthetics / A. Aesthetic Experience / 4. Beauty
We choose things for their fineness, their advantage, or for pleasure [Aristotle]
Leibniz identified beauty with intellectual perfection [Leibniz, by Gardner]
Beauty increases with familiarity [Leibniz]
21. Aesthetics / A. Aesthetic Experience / 5. Natural Beauty
Pentathletes look the most beautiful, because they combine speed and strength [Aristotle]
Nothing contrary to nature is beautiful [Aristotle]
21. Aesthetics / B. Nature of Art / 2. Art as Form
Beauty involves the Forms of order, symmetry and limit, which can be handled mathematically [Aristotle]
21. Aesthetics / B. Nature of Art / 8. The Arts / a. Music
Music charms, although its beauty is the harmony of numbers [Leibniz]
21. Aesthetics / B. Nature of Art / 8. The Arts / b. Literature
Poetry is more philosophic than history, as it concerns universals, not particulars [Aristotle]
21. Aesthetics / C. Artistic Issues / 5. Objectivism in Art
The collective judgement of many people on art is better than that of an individual [Aristotle]
21. Aesthetics / C. Artistic Issues / 7. Art and Morality
The good is found in actions, but beauty can exist without movement [Aristotle]
Music can mould the character to be virtuous (just as gymnastics trains the body) [Aristotle]
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / a. Preconditions for ethics
Animals lack morality because they lack self-reflection [Leibniz]
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / d. Ethical theory
We aim not to identify goodness, but to be good [Aristotle]
There is no fixed art of good conduct, and each situation is different, as in navigation [Aristotle]
We must take for granted that we should act according to right principle [Aristotle]
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / g. Moral responsibility
Acts are voluntary if done knowingly, by the agent, and in his power to avoid it [Aristotle]
Humans are moral, and capable of reward and punishment, because of memory and self-consciousness [Leibniz, by Jolley]
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature
Men are physically prime at thirty-five, and mentally prime at forty-nine [Aristotle]
Perhaps we get a better account of happiness as the good for man if we know his function [Aristotle]
If bodily organs have functions, presumably the whole person has one [Aristotle]
To eat vast amounts is unnatural, since natural desire is to replenish the deficiency [Aristotle]
What is natural for us is either there at birth, or appears by normal processes [Aristotle]
Aristotle never actually says that man is a rational animal [Aristotle, by Fogelin]
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / f. Übermensch
For the great-souled man it is sometimes better to be dead [Aristotle]
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / j. Ethics by convention
We all feel universal right and wrong, independent of any community or contracts [Aristotle]
Aristotle said there are two levels of virtue - the conventional and the intellectual [Taylor,R on Aristotle]
Moral acts are so varied that they must be convention, not nature [Aristotle]
Some say slavery is unnatural and created by convention, and is therefore forced, and unjust [Aristotle]
22. Metaethics / B. Value / 1. Nature of Value / a. Nature of value
For Aristotle 'good' means purpose, and value is real but relational [Achtenberg on Aristotle]
22. Metaethics / B. Value / 1. Nature of Value / e. Means and ends
We desire final things just for themselves, and not for the sake of something else [Aristotle]
How can an action be intrinsically good if it is a means to 'eudaimonia'? [Ackrill on Aristotle]
22. Metaethics / B. Value / 1. Nature of Value / f. Ultimate value
No one would choose life just for activities not done for their own sake [Aristotle]
22. Metaethics / B. Value / 2. Values / b. Successful function
Each thing that has a function is for the sake of that function [Aristotle]
A thing's active function is its end [Aristotle]
Each named function has a distinctive excellence attached to it [Aristotle]
Wearing a shoe is its intrinsic use, and selling it (as a shoe) is its coincidental use [Aristotle]
22. Metaethics / B. Value / 2. Values / d. Health
Excess and deficiency are bad for virtue, just as they are for bodily health [Aristotle]
Disreputable pleasures are only pleasant to persons with diseased perception [Aristotle]
Everything seeks, not a single good, but its own separate good [Aristotle]
22. Metaethics / B. Value / 2. Values / e. Death
The more virtuous and happy a person is, the worse the prospect becomes of ending life [Aristotle]
Death is just the contraction of an animal [Leibniz]
Death and generation are just transformations of an animal, augmented or diminished [Leibniz]
Most people facing death would happily re-live a similar life, with just a bit of variety [Leibniz]
22. Metaethics / B. Value / 2. Values / f. Altruism
All altruism is an extension of self-love [Aristotle]
22. Metaethics / B. Value / 2. Values / g. Love
Spirit [thumos] is the capacity by which we love [Aristotle]
Love is pleasure in the perfection, well-being or happiness of its object [Leibniz]
Most people want to be loved rather than to love, because they desire honour [Aristotle]
Only lovable things are loved, and they must be good, or pleasant, or useful [Aristotle]
22. Metaethics / B. Value / 2. Values / h. Fine deeds
Good people enjoy virtuous action, just as musicians enjoy beautiful melodies [Aristotle]
Slaves can't be happy, because they lack freedom [Aristotle]
Oxen, horses and children cannot be happy, because they cannot perform fine deeds [Aristotle]
22. Metaethics / B. Value / 2. Values / i. Self-interest
The best people exercise their virtue towards others, rather than to themselves [Aristotle]
Self-love benefits ourselves, and also helps others [Aristotle]
Selfishness is wrong not because it is self-love, but because it is excessive [Aristotle]
For Aristotle, true self-love is love of the higher parts of one's soul [Aristotle, by Annas]
22. Metaethics / B. Value / 2. Values / j. Evil
Metaphysical evil is imperfection; physical evil is suffering; moral evil is sin [Leibniz]
22. Metaethics / C. The Good / 1. Goodness / a. Form of the Good
Is the good a purpose, a source of movement, or a pure form? [Aristotle]
Each category of existence has its own good, so one Good cannot unite them [Aristotle]
There should be one science of the one Good, but there are many overlapping sciences [Aristotle]
'Good' is an attributive adjective like 'large', not predicative like 'red' [Geach, by Foot]
The good is 'that at which all things aim' [Aristotle]
22. Metaethics / C. The Good / 1. Goodness / b. Types of good
Goodness is when a thing (such as a circle) is complete, and conforms with its nature [Aristotle]
Intelligence and sight, and some pleasures and honours, are candidates for being good in themselves [Aristotle]
Goods are external, of the soul, and of the body; those of the soul (such as action) come first [Aristotle]
The good is the virtuous, the pleasing, or the useful [Leibniz]
22. Metaethics / C. The Good / 1. Goodness / f. Good as pleasure
Pleasure is not the Good, and not every pleasure is desirable [Aristotle]
The masses believe, not unreasonably, that the good is pleasure [Aristotle]
22. Metaethics / C. The Good / 1. Goodness / g. Consequentialism
Clearly perfect conduct will involve both good intention and good action [Aristotle]
You can't assess moral actions without referring to the qualities of character that produce them [Leibniz]
We judge people from their deeds because we cannot see their choices (which matter more) [Aristotle]
The function of good men is to confer benefits [Aristotle]
22. Metaethics / C. The Good / 1. Goodness / h. Good as benefit
Wealth is not the good, because it is only a means [Aristotle]
22. Metaethics / C. The Good / 2. Happiness / a. Nature of happiness
Happiness seems to involve virtue, or practical reason, or wisdom, or pleasure, or external goods [Aristotle]
Horses, birds and fish are not happy, lacking a divine aspect to their natures [Aristotle]
Happiness is advancement towards perfection [Leibniz]
You can be good while asleep, or passive, or in pain [Aristotle]
22. Metaethics / C. The Good / 2. Happiness / b. Eudaimonia
Eudaimonia is said to only have final value, where reason and virtue are also useful [Aristotle, by Orsi]
Does Aristotle say eudaimonia is the aim, or that it ought to be? [McDowell on Aristotle]
Some good and evil can happen to the dead, just as the living may be unaware of a disaster [Aristotle]
22. Metaethics / C. The Good / 2. Happiness / c. Value of happiness
Aristotle is unsure about eudaimonia because he is unsure what people are [Nagel on Aristotle]
Goods like pleasure are chosen partly for happiness, but happiness is chosen just for itself [Aristotle]
Happiness is perfect and self-sufficient, the end of all action [Aristotle]
22. Metaethics / C. The Good / 2. Happiness / d. Routes to happiness
Supreme human happiness is the greatest possible increase of his perfection [Leibniz]
Happiness is composed of a catalogue of internal and external benefits [Aristotle]
Happiness needs total goodness and a complete life [Aristotle]
If happiness can be achieved by study and effort, then it is open to anyone who is not corrupt [Aristotle]
Happiness is activity in accordance with complete virtue, for a whole life, with adequate external goods [Aristotle]
Happiness involves three things, of which the greatest is either wisdom, virtue, or pleasure [Aristotle]
The best life is that of the intellect, since that is in the fullest sense the man [Aristotle]
The happy life is in accordance with goodness, which implies seriousness [Aristotle]
22. Metaethics / C. The Good / 3. Pleasure / a. Nature of pleasure
Pleasure is a sense of perfection [Leibniz]
Pleasure and pain are perceptions of things as good or bad [Aristotle]
For Aristotle, pleasure is the perception of particulars as valuable [Achtenberg on Aristotle]
Intelligent pleasure is the perception of beauty, order and perfection [Leibniz]
22. Metaethics / C. The Good / 3. Pleasure / b. Types of pleasure
There are pleasures of the soul (e.g. civic honour, and learning) and of the body [Aristotle]
God feels one simple pleasure forever [Aristotle]
Intellectual pleasures are superior to sensuous ones [Aristotle]
22. Metaethics / C. The Good / 3. Pleasure / c. Value of pleasure
If we criticise bodily pleasures as licentious and bad, why do we consider their opposite, pain, to be bad? [Aristotle]
Nobody would choose the mentality of a child, even if they had the greatest childish pleasures [Aristotle]
There are many things we would want even if they brought no pleasure [Aristotle]
It is right to pursue pleasure, because it enhances life, and life is a thing to choose [Aristotle]
If happiness were mere amusement it wouldn't be worth a lifetime's effort [Aristotle]
22. Metaethics / C. The Good / 3. Pleasure / d. Sources of pleasure
Some things are not naturally pleasant, but become so through disease or depravity [Aristotle]
While replenishing we even enjoy unpleasant things, but only absolute pleasures when we are replenished [Aristotle]
22. Metaethics / C. The Good / 3. Pleasure / e. Role of pleasure
Character is revealed by the pleasures and pains people feel [Aristotle]
Feeling inappropriate pleasure or pain affects conduct, and is central to morality [Aristotle]
22. Metaethics / C. The Good / 3. Pleasure / f. Dangers of pleasure
The greater the pleasure, the greater the hindrance to thought [Aristotle]
23. Ethics / A. Egoism / 1. Ethical Egoism
Nobody would choose all the good things in world, if the price was loss of identity [Aristotle]
Self-interest is a relative good, but nobility an absolute good [Aristotle]
A man is his own best friend; therefore he ought to love himself best [Aristotle]
23. Ethics / A. Egoism / 2. Hedonism
Licentiousness concerns the animal-like pleasures of touch and taste [Aristotle]
23. Ethics / B. Contract Ethics / 2. Golden Rule
We can't want everyone to have more than their share, so a further standard is needed [Leibniz]
23. Ethics / C. Virtue Theory / 1. Virtue Theory / a. Nature of virtue
All moral virtue is concerned with bodily pleasure and pain [Aristotle]
The good for man is an activity of soul in accordance with virtue [Aristotle]
The best virtues are the most useful to others [Aristotle]
All good things can be misused, except virtue [Aristotle]
Many pleasures are relative to a person, but some love what is pleasant by nature, and virtue is like that [Aristotle]
Aristotle must hold that virtuous King Priam's life can be marred, but not ruined [Hursthouse on Aristotle]
Feelings are vital to virtue, but virtue requires choice, which feelings lack [Kosman on Aristotle]
Actions are not virtuous because of their quality, but because of the way they are done [Aristotle]
If virtues are not feelings or faculties, then they must be dispositions [Aristotle]
Virtue is the feeling of emotions that accord with one's perception of value [Achtenberg on Aristotle]
Virtue is a purposive mean disposition, which follows a rational principle and prudent judgment [Aristotle]
Acts may be forgivable if particular facts (rather than principles) are unknown [Aristotle]
A life of moral virtue brings human happiness, but not divine happiness [Aristotle]
There are six categories of particular cirumstance affecting an action [Aristotle]
An act is involuntary if the particular facts (esp. circumstances and effect) are unknown [Aristotle]
People who perform just acts unwillingly or ignorantly are still not just [Aristotle]
Virtue is different from continence [Aristotle]
Excellence is a sort of completion [Aristotle]
23. Ethics / C. Virtue Theory / 1. Virtue Theory / b. Basis of virtue
The two main parts of the soul give rise to two groups of virtues - intellectual, and moral [Aristotle]
How can good actions breed virtues, if you need to be virtuous to perform good actions? [Aristotle]
Is excellence separate from things, or part of them, or both? [Aristotle]
If a thing has excellence, this makes the thing good, and means it functions well [Aristotle]
Excellence is the best state of anything (like a cloak) which has an employment or function [Aristotle]
23. Ethics / C. Virtue Theory / 1. Virtue Theory / c. Particularism
It is not universals we must perceive for virtue, but particulars, seen as intrinsically good [Aristotle, by Achtenberg]
Actions concern particular cases, and rules must fit the cases, not the other way round [Aristotle]
We cannot properly judge by rules, because blame depends on perception of particulars [Aristotle]
23. Ethics / C. Virtue Theory / 1. Virtue Theory / d. Virtue theory critique
Aristotle neglects the place of rules in the mature virtuous person [Annas on Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / a. Natural virtue
We are partly responsible for our own dispositions and virtues [Aristotle]
Moral virtue is not natural, because its behaviour can be changed, unlike a falling stone [Aristotle]
Dispositions to virtue are born in us, but without intelligence they can be harmful [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / c. Motivation for virtue
The end of virtue is what is right and honourable or fine [Aristotle]
Virtuous people are like the citizens of the best city [Aristotle]
A person is good if they act from choice, and for the sake of the actions in themselves [Aristotle]
Existence is desirable if one is conscious of one's own goodness [Aristotle]
People become good because of nature, habit and reason [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / d. Teaching virtue
We acquire virtues by habitually performing good deeds [Aristotle]
True education is training from infancy to have correct feelings [Aristotle]
Nature enables us to be virtuous, but habit develops virtue in us [Aristotle]
Like activities produce like dispositions, so we must give the right quality to the activity [Aristotle]
We must practise virtuous acts because practice actually teaches us the nature of virtue [Burnyeat on Aristotle]
People can break into the circle of virtue and good action, by chance, or with help [Aristotle]
We acquire virtue by the repeated performance of just and temperate acts [Aristotle]
Associating with good people can be a training in virtue [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / e. Character
A person of good character sees the truth about what is actually fine and pleasant [Aristotle]
People develop their characters through the activities they pursue [Aristotle]
When people speak of justice they mean a disposition of character to behave justly [Aristotle]
It is very hard to change a person's character traits by argument [Aristotle]
Character can be heroic, excellent, controlled, uncontrolled, bad, or brutish [Aristotle, by Urmson]
The three states of character to avoid are vice, 'akrasia' and brutishness [Aristotle]
Character virtues (such as courage) are of the non-rational part, which follows the rational part [Aristotle]
Character is shown by what is or is not enjoyed, and virtue chooses the mean among them [Aristotle]
We judge character not by their actions, but by their reasons for actions [Aristotle]
Character (éthos) is developed from habit (ethos) [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / f. The Mean
The mean implies that vices are opposed to one another, not to virtue [Aristotle, by Annas]
Virtues are destroyed by the excess and preserved by the mean [Aristotle]
Aristotle aims at happiness by depressing emotions to a harmless mean [Nietzsche on Aristotle]
The mean is relative to the individual (diet, for example) [Aristotle]
Skills are only well performed if they observe the mean [Aristotle]
One drink a day is moderation, but very drunk once a week could exhibit the mean [Urmson on Aristotle]
In most normal situations it is not appropriate to have any feelings at all [Urmson on Aristotle]
We must tune our feelings to be right in every way [Aristotle]
The law is the mean [Aristotle]
The mean is always right, and the extremes are always wrong [Aristotle]
The vices to which we are most strongly pulled are most opposed to the mean [Aristotle]
To make one's anger exactly appropriate to a situation is very difficult [Aristotle]
Patient people are indignant, but only appropriately, as their reason prescribes [Aristotle]
The sincere man is praiseworthy, because truth is the mean between boasting and irony [Aristotle]
People sometimes exhibit both extremes together, but the mean is contrary to both of them [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / h. Right feelings
At times we ought to feel angry, and we ought to desire health and learning [Aristotle]
It is foolish not to be angry when it is appropriate [Aristotle]
Possessors of a virtue tend to despise what reason shows to be its opposite [Aristotle]
Virtue is concerned with correct feelings [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / i. Absolute virtues
There is no right time or place or way or person for the committing of adultery; it is just wrong [Aristotle]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / j. Unity of virtue
Nowadays we (unlike Aristotle) seem agreed that someone can have one virtue but lack others [Williams,B on Aristotle]
Greatness of soul produces all the virtues - and vice versa [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / a. Virtues
Gods exist in a state which is morally superior to virtue [Aristotle]
Friendship is preferable to money, since its excess is preferable [Aristotle]
Justice and self-control are better than courage, because they are always useful [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / b. Temperance
It is quite possible to live a moderate life and yet be miserable [Aristotle]
If someone just looks at or listens to beautiful things, they would not be thought intemperate [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / c. Justice
What emotion is displayed in justice, and what are its deficiency and excess? [Urmson on Aristotle]
Particular justice concerns specific temptations, but universal justice concerns the whole character [Aristotle]
Justice concerns our behaviour in dealing with other people [Aristotle]
Justice is whatever creates or preserves social happiness [Aristotle]
Justice is a virtue of communities [Aristotle]
The word 'unjust' describes law-breaking and exploitation [Aristotle]
Between friends there is no need for justice [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / d. Courage
True courage is an appropriate response to a dangerous situation [Aristotle]
Strictly speaking, a courageous person is one who does not fear an honourable death [Aristotle]
Courage follows reason, which tells us to choose what is noble [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / e. Honour
Honour is clearly the greatest external good [Aristotle]
If you aim at honour, you make yourself dependent on the people to whom you wish to be superior [Aristotle, by Williams,B]
Honour depends on what it is for, and whether it is bestowed by worthy people [Aristotle]
Honour depends too much on the person who awards it [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / f. Compassion
The young feel pity from philanthropy, but the old from self-concern [Aristotle]
23. Ethics / C. Virtue Theory / 3. Virtues / g. Contemplation
Lower animals cannot be happy, because they cannot contemplate [Aristotle]
Contemplation (with the means to achieve it) is the perfect happiness for man [Aristotle]
Only contemplation is sought for its own sake; practical activity always offers some gain [Aristotle]
The intellectual life is divine in comparison with ordinary human life [Aristotle]
The gods live, but action is unworthy of them, so that only leaves contemplation? [Aristotle]
Contemplation is a supreme pleasure and excellence [Aristotle]
We should aspire to immortality, and live by what is highest in us [Aristotle]
The more people contemplate, the happier they are [Aristotle]
23. Ethics / C. Virtue Theory / 4. External Goods / a. External goods
The fine deeds required for happiness need external resources, like friends or wealth [Aristotle]
A man can't be happy if he is ugly, or of low birth, or alone and childless [Aristotle]
It is nonsense to say a good person is happy even if they are being tortured or suffering disaster [Aristotle]
Goods in the soul are more worthy than those outside it, as everybody wants them [Aristotle]
23. Ethics / C. Virtue Theory / 4. External Goods / c. Wealth
The virtue of generosity requires money [Aristotle]
The rich are seen as noble, because they don't need to commit crimes [Aristotle]
Rich people are mindlessly happy [Aristotle]
23. Ethics / C. Virtue Theory / 4. External Goods / d. Friendship
Master and slave can have friendship through common interests [Aristotle]
We value friendship just for its own sake [Aristotle]
Bad men can have friendships of utility or pleasure, but only good men can be true friends [Aristotle]
Decent people can be friends with base people [Aristotle]
Aristotle does not confine supreme friendship to moral heroes [Cooper,JM on Aristotle]
For Aristotle in the best friendships the binding force is some excellence of character [Cooper,JM on Aristotle]
Friendship cannot be immediate; it takes time, and needs testing [Aristotle]
23. Ethics / D. Deontological Ethics / 1. Deontology
We want good education and sociability, rather than lots of moral precepts [Leibniz]
'Enkrateia' (control) means abiding by one's own calculations [Aristotle]
24. Political Theory / A. Basis of a State / 1. A People / a. Human distinctiveness
Society collapses if people cannot rely on exchanging good for good and evil for evil [Aristotle]
Even more than a social being, man is a pairing and family being [Aristotle]
Man is by nature a political animal [Aristotle]
People want to live together, even when they don't want mutual help [Aristotle]
Only humans have reason [Aristotle]
Man is intrinsically a civilized animal [Aristotle]
24. Political Theory / A. Basis of a State / 1. A People / b. The natural life
Man is by nature a social being [Aristotle]
24. Political Theory / A. Basis of a State / 1. A People / c. A unified people
The community (of villages) becomes a city when it is totally self-sufficient [Aristotle]
A community must share a common view of good and justice [Aristotle]
People who are anti-social or wholly self-sufficient are no part of a city [Aristotle]
Friendship is the best good for cities, because it reduces factions [Aristotle]
A city can't become entirely one, because its very nature is to be a multitude [Aristotle]
A community should all share to some extent in something like land or food [Aristotle]
24. Political Theory / A. Basis of a State / 2. Population / b. State population
The size of a city is decided by the maximum self-sufficient community that can be surveyed [Aristotle]
24. Political Theory / B. Nature of a State / 1. Purpose of a State
A city aims at living well [Aristotle]
A bad political constitution (especially a tyranny) makes friendship almost impossible [Aristotle]
The main function of politics is to produce friendship [Aristotle]
Political science aims at the highest good, which involves creating virtue in citizens [Aristotle]
What is the best life for everyone, and is that a communal or an individual problem? [Aristotle]
The same four cardinal virtues which apply to individuals also apply to a city [Aristotle]
Every state is an association formed for some good purpose [Aristotle]
The happiest city is the one that acts most nobly [Aristotle]
24. Political Theory / B. Nature of a State / 2. State Legitimacy / d. General will
The state aims to consist as far as possible of those who are like and equal [Aristotle]
24. Political Theory / B. Nature of a State / 3. Constitutions
The six constitutions are monarchy/tyranny, aristocracy/oligarchy, and polity/democracy [Aristotle]
A city is a community of free people, and the constitution should aim at the common advantage [Aristotle]
Any constitution can be made to last for a day or two [Aristotle]
The best constitution enables everyone to live the best life [Aristotle]
The four constitutions are democracy (freedom), oligarchy (wealth), aristocracy (custom), tyranny (security) [Aristotle]
The aim of legislators, and of a good constitution, is to create good citizens [Aristotle]
We must decide the most desirable human life before designing a constitution [Aristotle]
Constitutions specify distribution of offices, the authorities, and the community's aim [Aristotle]
The greed of the rich is more destructive than the greed of the people [Aristotle]
24. Political Theory / B. Nature of a State / 4. Citizenship
The middle classes are neither ambitious nor anarchic, which is good [Aristotle]
The virtues of a good citizen are relative to a particular constitution [Aristotle]
A person can be an excellent citizen without being an excellent man [Aristotle]
A citizen is someone who is allowed to hold official posts in a city [Aristotle]
24. Political Theory / C. Ruling a State / 2. Leaders / b. Monarchy
Kings should be selected according to character [Aristotle]
24. Political Theory / C. Ruling a State / 2. Leaders / d. Elites
The only virtue special to a ruler is practical wisdom [Aristotle]
People who buy public office will probably expect to profit from it [Aristotle]
The rich can claim to rule, because of land ownership, and being more trustworthy [Aristotle]
The guardians should not be harsh to strangers, as no one should behave like that [Aristotle]
24. Political Theory / C. Ruling a State / 3. Government / b. Legislature
We hold that every piece of legislation is just [Aristotle]
24. Political Theory / C. Ruling a State / 3. Government / c. Executive
In large communities it is better if more people participate in the offices [Aristotle]
Election of officials by the elected is dangerous, because factions can control it [Aristotle]
Officers should like the constitution, be capable, and have appropriate virtues and justice [Aristotle]
24. Political Theory / D. Ideologies / 5. Democracy / a. Nature of democracy
Democracy is the best constitution for friendship, because it encourages equality [Aristotle]
Like water, large numbers of people are harder to corrupt than a few [Aristotle]
Democracy arises when people who are given equal freedom assume unconditional equality [Aristotle]
Popular leaders only arise in democracies that are not in accord with the law [Aristotle]
Choosing officials by lot is democratic [Aristotle]
The many may add up to something good, even if they are inferior as individuals [Aristotle]
24. Political Theory / D. Ideologies / 5. Democracy / d. Representative democracy
If the people are equal in nature, then they should all share in ruling [Aristotle]
It is wrong that a worthy officer of state should seek the office [Aristotle]
No office is permanent in a democracy [Aristotle]
24. Political Theory / D. Ideologies / 5. Democracy / e. Democratic minorities
In many cases, the claim that the majority is superior would apply equally to wild beasts [Aristotle]
24. Political Theory / D. Ideologies / 5. Democracy / f. Against democracy
Ultimate democracy is tyranny [Aristotle]
24. Political Theory / D. Ideologies / 6. Liberalism / e. Liberal community
We aim to understand the best possible community for free people [Aristotle]
24. Political Theory / D. Ideologies / 7. Communitarianism / a. Communitarianism
Friendship holds communities together, and lawgivers value it more than justice [Aristotle]
Friendship is based on a community of sharing [Aristotle]
Community is based on friends, who are equal and similar, and share things [Aristotle]
Look at all of the citizens before judging a city to be happy [Aristotle]
The best communities rely on a large and strong middle class [Aristotle]
Citizens do not just own themselves, but are also parts of the city [Aristotle]
24. Political Theory / D. Ideologies / 8. Socialism
People care less about what is communal, and more about what is their own [Aristotle]
24. Political Theory / D. Ideologies / 9. Communism
Owning and sharing property communally increases disagreements [Aristotle]
There could be private land and public crops, or public land and private crops, or both public [Aristotle]
24. Political Theory / D. Ideologies / 12. Feminism
Both women and children should be educated, as this contributes to a city's excellence [Aristotle]
25. Social Practice / A. Freedoms / 1. Slavery
Natural slaves are those naturally belonging to another, or who can manage no more than labouring [Aristotle]
Aristotle thought slavery is just if it is both necessary and natural [Aristotle, by Sandel]
25. Social Practice / A. Freedoms / 6. Political freedom
One principle of liberty is to take turns ruling and being ruled [Aristotle]
25. Social Practice / B. Equalities / 1. Grounds of equality
Equality is obviously there to help people who do not get priority in the constitution [Aristotle]
It is always the weak who want justice and equality, not the strong [Aristotle]
We can claim an equal right to aristocratic virtue, as well as to wealth or freedom [Aristotle]
25. Social Practice / B. Equalities / 2. Political equality
The Heraeans replaced election with lot, to thwart campaigning [Aristotle]
It is dreadful to neither give a share nor receive a share [Aristotle]
Faction is for inferiors to be equal, and equals to become superior [Aristotle]
25. Social Practice / B. Equalities / 4. Economic equality
Phaleas proposed equality of property, provided there is equality of education [Aristotle]
Wealth could be quickly leveled by only the rich giving marriage dowries [Aristotle]
25. Social Practice / C. Rights / 1. Basis of Rights
Law is intelligence without appetite [Aristotle]
25. Social Practice / C. Rights / 4. Property rights
Property should be owned privately, but used communally [Aristotle]
25. Social Practice / D. Justice / 1. Basis of justice
The virtue of justice may be relative to a particular constitution [Aristotle]
Justice is the order in a political community [Aristotle]
Justice is equality for equals, and inequality for unequals [Aristotle]
For Aristotle, debates about justice are debates about the good life [Aristotle, by Sandel]
The best cure for mutual injustice is friendship [Aristotle]
The good is obviously justice, which benefits the whole community, and involves equality in some sense [Aristotle]
25. Social Practice / D. Justice / 2. The Law / a. Legal system
If it is easy to change the laws, that makes them weaker [Aristotle]
Man is the worst of all animals when divorced from law and justice [Aristotle]
Laws that match people's habits are more effective than mere written rules [Aristotle]
25. Social Practice / D. Justice / 2. The Law / b. Rule of law
It is preferable that law should rule rather than any single citizen [Aristotle]
Correct law should be in control, with rulers only deciding uncertain issues [Aristotle]
It is said that we should not stick strictly to written law, as it is too vague [Aristotle]
25. Social Practice / D. Justice / 2. The Law / c. Natural law
Natural law theory is found in Aquinas, in Leibniz, and at the Nuremberg trials [Leibniz, by Jolley]
Natural justice is the same everywhere, and does not (unlike legal justice) depend on acceptance [Aristotle]
25. Social Practice / D. Justice / 3. Punishment / a. Right to punish
There are natural rewards and punishments, like illness after over-indulgence [Leibniz]
25. Social Practice / D. Justice / 3. Punishment / b. Retribution for crime
It is noble to avenge oneself on one's enemies, and not come to terms with them [Aristotle]
25. Social Practice / E. Policies / 2. Religion in Society
The whole state should pay for the worship of the gods [Aristotle]
25. Social Practice / E. Policies / 5. Education / a. Aims of education
A state is plural, and needs education to make it a community [Aristotle]
A city has a single end, so education must focus on that, and be communal, not private [Aristotle]
The aim of serious childhood play is the amusement of the complete adult [Aristotle]
It is the mark of an educated mind to be able to entertain an idea without accepting it [Aristotle]
25. Social Practice / E. Policies / 5. Education / b. Education principles
Aristotle said the educated were superior to the uneducated as the living are to the dead [Aristotle, by Diog. Laertius]
25. Social Practice / E. Policies / 5. Education / c. Teaching
Men learn partly by habit, and partly by listening [Aristotle]
Intellectual virtue arises from instruction (and takes time), whereas moral virtue result from habit [Aristotle]
Wise men aren't instructed; they instruct [Aristotle]
25. Social Practice / F. Life Issues / 3. Abortion
Abortions should be procured before the embryo has acquired life and sensation [Aristotle]
25. Social Practice / F. Life Issues / 4. Suicide
A suicide embraces death to run away from hardships, rather than because it is a fine deed [Aristotle]
26. Natural Theory / A. Speculations on Nature / 1. Nature
Nature is a principle of change, so we must understand change first [Aristotle]
Nature does nothing in vain [Aristotle]
The principle of determination in things obtains the greatest effect with the least effort [Leibniz]
Nothing natural is disorderly, because nature is responsible for all order [Aristotle]
Why are some things destructible and others not? [Aristotle]
'Nature' refers to two things - form and matter [Aristotle]
26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / a. Final purpose
If nature makes everything for a purpose, then plants and animals must have been made for man [Aristotle]
Nature has purpose, and aims at what is better. Is it coincidence that crops grow when it rains? [Aristotle]
There has to be some goal, and not just movement to infinity [Aristotle]
An unworn sandal is in vain, but nothing in nature is in vain [Aristotle]
Everything is arranged around a single purpose [Aristotle]
26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / b. Limited purposes
A thing's purpose is ambiguous, and from one point of view we ourselves are ends [Aristotle]
Teeth and crops are predictable, so they cannot be mere chance, but must have a purpose [Aristotle]
Aristotle needed to distinguish teleological description from teleological explanation [Irwin on Aristotle]
The nature of any given thing is determined by its end [Aristotle]
The best instruments have one purpose, not many [Aristotle]
It is folly not to order one's life around some end [Aristotle]
A machine is best defined by its final cause, which explains the roles of the parts [Leibniz]
The nature of a thing is its end and purpose [Aristotle]
26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / c. Purpose denied
Eyes could be used for a natural purpose, or for unnatural seeing, or for a non-seeing activity [Aristotle]
26. Natural Theory / A. Speculations on Nature / 3. Natural Function
Is ceasing-to-be unnatural if it happens by force, and natural otherwise? [Aristotle]
Each thing's function is its end [Aristotle]
26. Natural Theory / A. Speculations on Nature / 4. Mathematical Nature
Minds unconsciously count vibration beats in music, and enjoy it when they coincide [Leibniz]
Pythagoreans say the whole universe is made of numbers [Aristotle]
26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature
Continuity depends on infinity, because the continuous is infinitely divisible [Aristotle]
The heavens seem to be infinite, because we cannot imagine their end [Aristotle]
There are potential infinities (never running out), but actual infinity is incoherent [Aristotle, by Friend]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / a. Greek matter
Matter is neither a particular thing nor a member of a determinate category [Aristotle]
Aristotle says matter is a lesser substance, rather than wholly denying that it is a substance [Aristotle, by Kung]
Matter is perceptible (like bronze) or intelligible (like mathematical objects) [Aristotle]
Substance must exist, because something must endure during change between opposites [Aristotle]
Matter is the limit of points and lines, and must always have quality and form [Aristotle]
The primary matter is the substratum for the contraries like hot and cold [Aristotle]
Aristotle's matter can become any other kind of matter [Aristotle, by Wiggins]
Aristotle had a hierarchical conception of matter [Aristotle, by Fine,K]
Matter desires form, as female desires male, and ugliness desires beauty [Aristotle]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / b. Prime matter
Primary matter is what characterises other stuffs, and it has no distinct identity [Aristotle]
Ultimate matter is discredited, as Aristotle merged substratum of change with bearer of properties [Simons on Aristotle]
Aristotle may only have believed in prime matter because his elements were immutable [Aristotle, by Alexander,P]
The traditional view of Aristotle is God (actual form) at top and prime matter (potential matter) at bottom [Aristotle, by Gill,ML]
Prime matter is nothing when it is at rest [Leibniz]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / c. Ultimate substances
There couldn't be just one element, which was both water and air at the same time [Aristotle]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / e. The One
It doesn't explain the world to say it was originally all one. How did it acquire diversity? [Aristotle]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / f. Ancient elements
When Aristotle's elements compound they are stable, so why would they ever separate? [Weisberg/Needham/Hendry on Aristotle]
Aether moves in circles and is imperishable; the four elements perish, and move in straight lines [Aristotle, by Gill,ML]
An element is what bodies are analysed into, and won't itself divide into something else [Aristotle]
The Four Elements must change into one another, or else alteration is impossible [Aristotle]
Fire is hot and dry; Air is hot and moist; Water is cold and moist; Earth is cold and dry [Aristotle]
I claim that Aristotle's foundation is the four elements, and not wholly potential prime matter [Aristotle, by Gill,ML]
The true elements are atomic monads [Leibniz]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / g. Atomism
Bodies are endlessly divisible [Aristotle]
I think the corpuscular theory, rather than forms or qualities, best explains particular phenomena [Leibniz]
Leibniz rejected atoms, because they must be elastic, and hence have parts [Leibniz, by Garber]
Atomism is irrational because it suggests that two atoms can be indistinguishable [Leibniz]
Microscopes and the continuum suggest that matter is endlessly divisible [Leibniz]
There are atoms of substance, but no atoms of bulk or extension [Leibniz]
Wood is potentially divided through and through, so what is there in the wood besides the division? [Aristotle]
If a body is endlessly divided, is it reduced to nothing - then reassembled from nothing? [Aristotle]
The only simple things are monads, with no parts or extension [Leibniz]
Things are infinitely subdivisible and contain new worlds, which atoms would make impossible [Leibniz]
26. Natural Theory / A. Speculations on Nature / 7. Later Matter Theories / a. Early Modern matter
Leibniz struggled to reconcile bodies with a reality of purely soul-like entities [Jolley on Leibniz]
Secondary matter is active and complete; primary matter is passive and incomplete [Leibniz]
Not all of matter is animated, any more than a pond full of living fish is animated [Leibniz]
Every particle of matter contains organic bodies [Leibniz]
Bare or primary matter is passive; it is clothed or secondary matter which contains action [Leibniz]
26. Natural Theory / A. Speculations on Nature / 7. Later Matter Theories / c. Matter as extension
Even if extension is impenetrable, this still offers no explanation for motion and its laws [Leibniz]
Leibniz eventually said resistance, rather than extension, was the essence of body [Leibniz, by Pasnau]
26. Natural Theory / B. Natural Kinds / 1. Natural Kinds
Unusual kinds like mule are just a combination of two kinds [Aristotle]
26. Natural Theory / B. Natural Kinds / 2. Defining Kinds
All water is the same, because of a certain similarity [Aristotle]
26. Natural Theory / B. Natural Kinds / 6. Necessity of Kinds
Whatever holds of a kind intrinsically holds of it necessarily [Aristotle]
26. Natural Theory / C. Causation / 2. Types of cause
The 'form' of a thing explains why the matter constitutes that particular thing [Aristotle, by Politis]
A 'material' cause/explanation is the form of whatever is the source [Aristotle, by Politis]
Causes produce a few things in their own right, and innumerable things coincidentally [Aristotle]
Types of cause are nature, necessity and chance, and mind and human agency [Aristotle]
In the schools the Four Causes are just lumped together in a very obscure way [Leibniz]
26. Natural Theory / C. Causation / 3. Final causes
The four causes are the material, the form, the source, and the end [Aristotle]
Power rules in efficient causes, but wisdom rules in connecting them to final causes [Leibniz]
26. Natural Theory / C. Causation / 4. Naturalised causation
Is there cause outside matter, and can it be separated, and is it one or many? [Aristotle]
26. Natural Theory / C. Causation / 5. Direction of causation
People assume events cause what follows them [Aristotle]
26. Natural Theory / C. Causation / 8. Particular Causation / c. Conditions of causation
We exercise to be fit, but need fitness to exercise [Aristotle]
26. Natural Theory / C. Causation / 9. General Causation / b. Nomological causation
Pure Forms and numbers can't cause anything, and especially not movement [Aristotle]
26. Natural Theory / C. Causation / 9. General Causation / d. Causal necessity
When a power and its object meet in the right conditions, an action necessarily follows [Aristotle]
The connection in events enables us to successfully predict the future, so there must be a constant cause [Leibniz]
Causes can be inferred from perfect knowledge of their effects [Leibniz]
26. Natural Theory / D. Laws of Nature / 1. Laws of Nature
Each possible world contains its own laws, reflected in the possible individuals of that world [Leibniz]
God's laws would be meaningless without internal powers for following them [Leibniz]
An entelechy is a law of the series of its event within some entity [Leibniz]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / a. Scientific essentialism
If there is some trace of God in things, that would explain their natural force [Leibniz]
Qualities should be predictable from the nature of the subject [Leibniz]
Gold has a real essence, unknown to us, which produces its properties [Leibniz]
Part of our idea of gold is its real essence, which is not known to us in detail [Leibniz]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / b. Scientific necessity
It is not possible for fire to be cold or snow black [Aristotle]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / c. Essence and laws
Each of the infinite possible worlds has its own laws, and the individuals contain those laws [Leibniz]
Leibniz wanted to explain motion and its laws by the nature of body [Leibniz, by Garber]
The law within something fixes its persistence, and accords with general laws of nature [Leibniz]
In addition to laws, God must also create appropriate natures for things [Leibniz]
Gravity is within matter because of its structure, and it can be explained. [Leibniz]
The only permanence in things, constituting their substance, is a law of continuity [Leibniz]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / d. Knowing essences
Scientists must know the essential attributes of the things they study [Aristotle]
26. Natural Theory / D. Laws of Nature / 10. Closure of Physics
Leibniz had an unusual commitment to the causal completeness of physics [Leibniz, by Papineau]
27. Natural Reality / A. Classical Physics / 1. Mechanics / a. Explaining movement
If all movement is either pushing or pulling, there must be a still point in between where it all starts [Aristotle]
If movement can arise within an animal, why can't it also arise in the universe? [Aristotle]
When there is unnatural movement (e.g. fire going downwards) the cause is obvious [Aristotle]
If the more you raise some earth the faster it moves, why does the whole earth not move? [Aristotle]
Movement is spatial, alteration, withering or growth [Aristotle]
Practical reason is based on desire, so desire must be the ultimate producer of movement [Aristotle]
Movement can be intrinsic (like a ship) or relative (like its sailors) [Aristotle]
Bodies are recreated in motion, and don't exist in intervening instants [Leibniz]
All that is real in motion is the force or power which produces change [Leibniz]
Maybe motion is definable as 'change of place' [Leibniz]
Motion fulfils potentiality [Aristotle]
27. Natural Reality / A. Classical Physics / 1. Mechanics / b. Laws of motion
If something is pushed, it pushes back [Aristotle]
27. Natural Reality / A. Classical Physics / 1. Mechanics / c. Forces
Motion alone is relative, but force is real, and establishes its subject [Leibniz]
Leibniz uses 'force' to mean both activity and potential [Leibniz]
Clearly, force is that from which action follows, when unimpeded [Leibniz]
We need the metaphysical notion of force to explain mechanics, and not just extended mass [Leibniz]
All qualities of bodies reduce to forces [Leibniz]
It is plausible to think substances contain the same immanent force seen in our free will [Leibniz]
Power is passive force, which is mass, and active force, which is entelechy or form [Leibniz]
The force behind motion is like a soul, with its own laws of continual change [Leibniz]
Force in substance makes state follow state, and ensures the very existence of substance [Leibniz]
Some people return to scholastic mysterious qualities, disguising them as 'forces' [Leibniz]
27. Natural Reality / A. Classical Physics / 2. Thermodynamics / c. Conservation of energy
Leibniz upheld conservations of momentum and energy [Leibniz, by Papineau]
27. Natural Reality / A. Classical Physics / 2. Thermodynamics / d. Entropy
Change goes from possession to loss (as in baldness), but not the other way round [Aristotle]
27. Natural Reality / B. Modern Physics / 1. Relativity / a. Special relativity
Motion is not absolute, but consists in relation [Leibniz]
27. Natural Reality / C. Space / 1. Void
Void is a kind of place, so it can't explain place [Aristotle]
27. Natural Reality / C. Space / 2. Space
Space is the order of coexisting possibles [Leibniz]
27. Natural Reality / C. Space / 4. Substantival Space
If everything has a place, this causes an infinite regress, because each place must have place [Aristotle]
The idea that the universe could be moved forward with no other change is just a fantasy [Leibniz]
The universe as a whole is not anywhere [Aristotle]
27. Natural Reality / C. Space / 5. Relational Space
Place is not shape, or matter, or extension between limits; it is the limits of a body [Aristotle]
Space is an order among actual and possible things [Leibniz]
27. Natural Reality / D. Time / 1. Nature of Time / b. Relative time
If there were many cosmoses, each would have its own time, giving many times [Aristotle]
Space and time are the order of all possibilities, and don't just relate to what is actual [Leibniz]
Time is the order of inconsistent possibilities [Leibniz]
Space and time are purely relative [Leibniz]
There is no time without movement [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / c. Idealist time
It is unclear whether time depends on the existence of soul [Aristotle]
Would there be time if there were no mind? [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / d. Time as measure
For Aristotle time is not a process but a means for measuring processes [Aristotle, by Bardon]
Time does not exist without change [Aristotle]
Time is an aspect of change [Aristotle]
Time measures rest, as well as change [Aristotle]
Time is not change, but the number we associate with change [Aristotle]
Change only exists in time through its being temporally measure [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / e. Eventless time
If there were duration without change, we could never establish its length [Leibniz]
27. Natural Reality / D. Time / 1. Nature of Time / g. Growing block
Things may be necessary once they occur, but not be unconditionally necessary [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / i. Denying time
How can time exist, when it is composed of what has ceased to be and is yet to be? [Aristotle]
If all of time has either ceased to exist, or has not yet happened, maybe time does not exist [Aristotle]
Time doesn't exist, since its parts don't coexist [Leibniz]
No time exists except instants, and instants are not even a part of time, so time does not exist [Leibniz]
27. Natural Reality / D. Time / 2. Passage of Time / a. Experience of time
If everything in the universe happened a year earlier, there would be no discernible difference [Leibniz]
Time is not change, but requires change in our minds to be noticed [Aristotle]
27. Natural Reality / D. Time / 2. Passage of Time / e. Tensed (A) series
The present moment is obviously a necessary feature of time [Aristotle]
27. Natural Reality / D. Time / 2. Passage of Time / g. Time's arrow
When one element contains the grounds of the other, the first one is prior in time [Leibniz]
27. Natural Reality / D. Time / 2. Passage of Time / h. Change in time
Unlike time, change goes at different rates, and is usually localised [Aristotle, by Le Poidevin]
27. Natural Reality / D. Time / 3. Parts of Time / a. Beginning of time
It is hard to see how either time or movement could come into existence or be destroyed [Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / b. Instants
Time has parts, but the now is not one of them, and time is not composed of nows [Aristotle]
Nows can't be linked together, any more than points on a line [Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / d. Measuring time
Circular motion is the most obvious measure of time, and especially the celestial sphere [Aristotle]
We measure change by time, and time by change, as they are interdefined [Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / e. Present moment
We can't tell whether the changing present moment is one thing, or a succession of things [Aristotle]
The present moment is a link (of past to future), and also a limit (of past and of future) [Aristotle]
27. Natural Reality / E. Cosmology / 1. Cosmology
The earth must be round and of limited size, because moving north or south makes different stars visible [Aristotle]
The Earth must be spherical, because it casts a convex shadow on the moon [Aristotle]
27. Natural Reality / E. Cosmology / 2. Eternal Universe
Do things come to be from what is, or from what is not? Both seem problematical. [Aristotle]
If each thing can cease to be, why hasn't absolutely everything ceased to be long ago? [Aristotle]
27. Natural Reality / E. Cosmology / 3. The Beginning
Something which both moves and is moved is intermediate, so it follows that there must be an unmoved mover [Aristotle]
Even if the world is caused by fate, mind and nature are still prior causes [Aristotle]
Everyone agrees that the world had a beginning, but thinkers disagree over whether it will end [Aristotle]
The first mover is necessary, and because it is necessary it is good [Aristotle]
27. Natural Reality / E. Cosmology / 10. Multiverse
It seems possible that there exists a limited number of other worlds apart from this one [Aristotle]
27. Natural Reality / G. Biology / 2. Life
What is born has growth, a prime, and a withering away [Aristotle]
Plants have far less life than animals, but more life than other corporeal entities [Aristotle]
To regard animals as mere machines may be possible, but seems improbable [Leibniz]
27. Natural Reality / G. Biology / 3. Evolution
There is a gradual proceeding from the inanimate to animals, with no clear borderlines [Aristotle]
Men are related to animals, which are related to plants, then to fossils, and then to the apparently inert [Leibniz]
28. God / A. Divine Nature / 2. Divine Nature
God's essence is the source of possibilities, and his will the source of existents [Leibniz]
God must be intelligible, to select the actual world from the possibilities [Leibniz]
The source of all movement must be indivisible and have no magnitude [Aristotle]
God is not blessed and happy because of external goods, but because of his own nature [Aristotle]
God produces possibilities, and thus ideas [Leibniz]
There must a source of movement which is eternal, indivisible and without magnitude [Aristotle]
28. God / A. Divine Nature / 3. Divine Perfections
This is the most perfect possible universe, in its combination of variety with order [Leibniz]
Perfection is simply quantity of reality [Leibniz]
The universe contains everything possible for its perfect harmony [Leibniz]
God does everything in a perfect way, and never acts contrary to reason [Leibniz]
A perfection is a simple quality, which is positive and absolute, and has no limit [Leibniz]
The intelligent cause must be unique and all-perfect, to handle all the interconnected possibilities [Leibniz]
28. God / A. Divine Nature / 4. Divine Contradictions
Perfections must have overlapping parts if their incompatibility is to be proved [Leibniz]
28. God / A. Divine Nature / 5. God and Time
God is not a creator (involving time and change) and is not concerned with the inferior universe [Aristotle, by Armstrong,K]
If time were absolute that would make God's existence dependent on it [Leibniz, by Bardon]
28. God / A. Divine Nature / 6. Divine Morality / a. Divine morality
God prefers men to lions, but might not exterminate lions to save one man [Leibniz]
28. God / A. Divine Nature / 6. Divine Morality / b. Euthyphro question
If justice is arbitrary, or fixed but not observed, or not human justice, this undermines God [Leibniz]
28. God / B. Proving God / 1. Proof of God
For Aristotle God is defined in an axiom, for which there is no proof [Aristotle, by Frede,M]
Without the principle of sufficient reason, God's existence could not be demonstrated [Leibniz]
28. God / B. Proving God / 2. Proofs of Reason / a. Ontological Proof
God's existence is either necessary or impossible [Leibniz, by Scruton]
God is the first reason of things; our experiences are contingent, and contain no necessity [Leibniz]
God alone (the Necessary Being) has the privilege that He must exist if He is possible [Leibniz]
Being is better than not-being [Aristotle]
The concept of an existing thing must contain more than the concept of a non-existing thing [Leibniz]
28. God / B. Proving God / 2. Proofs of Reason / b. Ontological Proof critique
'Being' and 'oneness' are predicated of everything which exists [Aristotle]
Properties must be proved, but not essence; but existents are not a kind, so existence isn't part of essence [Aristotle]
28. God / B. Proving God / 3. Proofs of Evidence / a. Cosmological Proof
The existence of God, and all metaphysics, follows from the Principle of Sufficient Reason [Leibniz]
Mechanics shows that all motion originates in other motion, so there is a Prime Mover [Leibniz]
28. God / B. Proving God / 3. Proofs of Evidence / b. Teleological Proof
An Order controls all things [Aristotle]
The world can't be arranged at all if there is nothing eternal and separate [Aristotle]
All substances are in harmony, even though separate, so they must have one divine cause [Leibniz]
The laws of physics are wonderful evidence of an intelligent and free being [Leibniz]
If the universe is a perfect agreement of uncommunicating substances, there must be a common source [Leibniz]
28. God / B. Proving God / 3. Proofs of Evidence / e. Miracles
Everything, even miracles, belongs to order [Leibniz]
Allow no more miracles than are necessary [Leibniz]
Miracles are extraordinary operations by God, but are nevertheless part of his design [Leibniz]
28. God / C. Attitudes to God / 2. Pantheism
To say that nature or the one universal substance is God is a pernicious doctrine [Leibniz]
28. God / C. Attitudes to God / 4. God Reflects Humanity
Men imagine gods to be of human shape, with a human lifestyle [Aristotle]
28. God / C. Attitudes to God / 5. Atheism
Leibniz was closer than Spinoza to atheism [Leibniz, by Stewart,M]
29. Religion / A. Polytheistic Religion / 2. Greek Polytheism
The concepts of gods arose from observing the soul, and the cosmos [Aristotle, by Sext.Empiricus]
There are as many eternal unmovable substances as there are movements of the stars [Aristotle]
29. Religion / D. Religious Issues / 1. Religious Commitment / a. Religious Belief
Prayers are useful, because God foresaw them in his great plan [Leibniz]
29. Religion / D. Religious Issues / 2. Immortality / a. Immortality
Immortality without memory is useless [Leibniz]
We all assume immortality is impossible [Aristotle]
29. Religion / D. Religious Issues / 2. Immortality / b. Soul
The soul is indestructible and always self-aware [Leibniz]
29. Religion / D. Religious Issues / 2. Immortality / c. Animal Souls
Animals have thought and sensation, and indestructible immaterial souls [Leibniz]
Animals have souls, but lack consciousness [Leibniz]
29. Religion / D. Religious Issues / 3. Problem of Evil / a. Problem of Evil
Evil is a negation of good, which arises from non-being [Leibniz]
God only made sin possible because a much greater good can be derived from it [Leibniz]
How can an all-good, wise and powerful being allow evil, sin and apparent injustice? [Leibniz]
Being confident of God's goodness, we disregard the apparent local evils in the visible world [Leibniz]
29. Religion / D. Religious Issues / 3. Problem of Evil / b. Human Evil
God doesn't decide that Adam will sin, but that sinful Adam's existence is to be preferred [Leibniz]
Evil serves a greater good, and pain is necessary for higher pleasure [Leibniz]