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All the ideas for 'Axiomatic Theories of Truth (2005 ver)', 'works' and 'Groundwork of the Metaphysic of Morals'

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138 ideas

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]
     Full Idea: Leibniz's philosophy largely serves to justify and enable a coherent empirical account of the world.
     From: report of Gottfried Leibniz (works [1690]) by Franklin Perkins - Leibniz: Guide for the Perplexed 4.I
     A reaction: A nice counter to the simplistic idea of Locke as empiricist and Leibniz as rationalist. Leibniz is explicit that science needs a separate 'metaphysics' to underpin it. Perkins says Locke constructs experience, and Leibniz analyses it.
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]
     Full Idea: For Leibniz, metaphysics is above all a science of the intelligible nature of being.
     From: report of Gottfried Leibniz (works [1690]) by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 4.3.1
     A reaction: [Their footnote gives two quotes in support] I could take this as my motto. We are not studying the 'nature of being', because we can't. We are studying what is 'intelligible' about it; my thesis is that the need for intelligibility imposes an order.
1. Philosophy / E. Nature of Metaphysics / 4. Metaphysics as Science
Leibniz tried to combine mechanistic physics with scholastic metaphysics [Leibniz, by Pasnau]
     Full Idea: Leibniz made a sustained attempt to combine a mechanistic physics with something like a scholastic metaphysics.
     From: report of Gottfried Leibniz (works [1690]) by Robert Pasnau - Metaphysical Themes 1274-1671 20.1
     A reaction: This seems to me clear enough, and a lot of current philosophers seem to underestimate how Aristotelian Leibniz was.
1. Philosophy / E. Nature of Metaphysics / 5. Metaphysics beyond Science
Metaphysics goes beyond the empirical, so doesn't need examples [Kant]
     Full Idea: Metaphysics doesn't let itself be held back by anything empirical, and indeed goes right to Ideas, where examples themselves fail.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 412.36)
2. Reason / A. Nature of Reason / 1. On Reason
Reason is the faculty for grasping apriori necessary truths [Leibniz, by Burge]
     Full Idea: Leibniz actually characterises reason as the faculty for apprehending priori, necessary truths.
     From: report of Gottfried Leibniz (works [1690]) by Tyler Burge - Frege on Apriority (with ps) 2
     A reaction: No wonder it is called the Age of Reason when the claims are this grandiose.
2. Reason / A. Nature of Reason / 4. Aims of Reason
For Leibniz rationality is based on non-contradiction and the principle of sufficient reason [Leibniz, by Benardete,JA]
     Full Idea: Leibniz distinguished two fundamental principles of rationality - the principle of non-contradiction and the principle of sufficient reason.
     From: report of Gottfried Leibniz (works [1690]) by José A. Benardete - Metaphysics: the logical approach Ch.18
The hallmark of rationality is setting itself an end [Kant]
     Full Idea: Rational nature separates itself out from all other things by the fact that it sets itself an end.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 437.82)
2. Reason / B. Laws of Thought / 2. Sufficient Reason
Leibniz said the principle of sufficient reason is synthetic a priori, since its denial is not illogical [Leibniz, by Benardete,JA]
     Full Idea: Leibniz assigns synthetic a priori status to the principle of sufficient reason, readily conceding that one can deny it without fear of inconsistency.
     From: report of Gottfried Leibniz (works [1690]) by José A. Benardete - Metaphysics: the logical approach Ch.18
2. Reason / E. Argument / 6. Conclusive Proof
Leibniz is inclined to regard all truths as provable [Leibniz, by Frege]
     Full Idea: Leibniz has an inclination to regard all truths as provable.
     From: report of Gottfried Leibniz (works [1690]) by Gottlob Frege - Grundlagen der Arithmetik (Foundations) §15
     A reaction: Leibniz sounds like the epitome of Enlightenment optimism about the powers of reason. Could God prove every truth? It's a nice thought.
3. Truth / A. Truth Problems / 2. Defining Truth
Truth definitions don't produce a good theory, because they go beyond your current language [Halbach]
     Full Idea: It is far from clear that a definition of truth can lead to a philosophically satisfactory theory of truth. Tarski's theorem on the undefinability of the truth predicate needs resources beyond those of the language for which it is being defined.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1)
     A reaction: The idea is that you need a 'metalanguage' for the definition. If I say 'p' is a true sentence in language 'L', I am not making that observation from within language L. The dream is a theory confined to the object language.
3. Truth / F. Semantic Truth / 1. Tarski's Truth / c. Meta-language for truth
In semantic theories of truth, the predicate is in an object-language, and the definition in a metalanguage [Halbach]
     Full Idea: In semantic theories of truth (Tarski or Kripke), a truth predicate is defined for an object-language. This definition is carried out in a metalanguage, which is typically taken to include set theory or another strong theory or expressive language.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1)
     A reaction: Presumably the metalanguage includes set theory because that connects it with mathematics, and enables it to be formally rigorous. Tarski showed, in his undefinability theorem, that the meta-language must have increased resources.
3. Truth / G. Axiomatic Truth / 1. Axiomatic Truth
Should axiomatic truth be 'conservative' - not proving anything apart from implications of the axioms? [Halbach]
     Full Idea: If truth is not explanatory, truth axioms should not allow proof of new theorems not involving the truth predicate. It is hence said that axiomatic truth should be 'conservative' - not implying further sentences beyond what the axioms can prove.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1.3)
     A reaction: [compressed]
If truth is defined it can be eliminated, whereas axiomatic truth has various commitments [Halbach]
     Full Idea: If truth can be explicitly defined, it can be eliminated, whereas an axiomatized notion of truth may bring all kinds of commitments.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1.3)
     A reaction: The general principle that anything which can be defined can be eliminated (in an abstract theory, presumably, not in nature!) raises interesting questions about how many true theories there are which are all equivalent to one another.
Axiomatic theories of truth need a weak logical framework, and not a strong metatheory [Halbach]
     Full Idea: Axiomatic theories of truth can be presented within very weak logical frameworks which require very few resources, and avoid the need for a strong metalanguage and metatheory.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1)
Instead of a truth definition, add a primitive truth predicate, and axioms for how it works [Halbach]
     Full Idea: The axiomatic approach does not presuppose that truth can be defined. Instead, a formal language is expanded by a new primitive predicate of truth, and axioms for that predicate are then laid down.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1)
     A reaction: Idea 15647 explains why Halbach thinks the definition route is no good.
3. Truth / H. Deflationary Truth / 2. Deflationary Truth
Deflationists say truth merely serves to express infinite conjunctions [Halbach]
     Full Idea: According to many deflationists, truth serves merely the purpose of expressing infinite conjunctions.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1.3)
     A reaction: That is, it asserts sentences that are too numerous to express individually. It also seems, on a deflationist view, to serve for anaphoric reference to sentences, such as 'what she just said is true'.
4. Formal Logic / F. Set Theory ST / 1. Set Theory
To prove the consistency of set theory, we must go beyond set theory [Halbach]
     Full Idea: The consistency of set theory cannot be established without assumptions transcending set theory.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 2.1)
5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
We can use truth instead of ontologically loaded second-order comprehension assumptions about properties [Halbach]
     Full Idea: The reduction of 2nd-order theories (of properties or sets) to axiomatic theories of truth may be conceived as a form of reductive nominalism, replacing existence assumptions (for comprehension axioms) by ontologically innocent truth assumptions.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1.1)
     A reaction: I like this very much, as weeding properties out of logic (without weeding them out of the world). So-called properties in logic are too abundant, so there is a misfit with their role in science.
5. Theory of Logic / E. Structures of Logic / 7. Predicates in Logic
Instead of saying x has a property, we can say a formula is true of x - as long as we have 'true' [Halbach]
     Full Idea: Quantification over (certain) properties can be mimicked in a language with a truth predicate by quantifying over formulas. Instead of saying that Tom has the property of being a poor philosopher, we can say 'x is a poor philosopher' is true of Tom.
     From: Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1.1)
     A reaction: I love this, and think it is very important. He talks of 'mimicking' properties, but I see it as philosophers mistakenly attributing properties, when actually what they were doing is asserting truths involving certain predicates.
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / a. Units
Number cannot be defined as addition of ones, since that needs the number; it is a single act of abstraction [Fine,K on Leibniz]
     Full Idea: Leibniz's talk of the addition of ones cannot define number, since it cannot be specified how often they are added without using the number itself. Number must be an organic unity of ones, achieved by a single act of abstraction.
     From: comment on Gottfried Leibniz (works [1690]) by Kit Fine - Cantorian Abstraction: Recon. and Defence §1
     A reaction: I doubt whether 'abstraction' is the right word for this part of the process. It seems more like a 'gestalt'. The first point is clearly right, that it is the wrong way round if you try to define number by means of addition.
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / j. Infinite divisibility
The continuum is not divided like sand, but folded like paper [Leibniz, by Arthur,R]
     Full Idea: Leibniz said the division of the continuum should not be conceived 'to be like the division of sand into grains, but like that of a tunic or a sheet of paper into folds'.
     From: report of Gottfried Leibniz (works [1690], A VI iii 555) by Richard T.W. Arthur - Leibniz
     A reaction: This from the man who invented calculus. This thought might apply well to the modern physicist's concept of a 'field'.
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / k. Infinitesimals
A tangent is a line connecting two points on a curve that are infinitely close together [Leibniz]
     Full Idea: We have only to keep in mind that to find a tangent means to draw a line that connects two points of a curve at an infinitely small distance.
     From: Gottfried Leibniz (works [1690]), quoted by Philip Kitcher - The Nature of Mathematical Knowledge 10.1
     A reaction: [The quote can be tracked through Kitcher's footnote]
Nature uses the infinite everywhere [Leibniz]
     Full Idea: Nature uses the infinite in everything it does.
     From: Gottfried Leibniz (works [1690]), quoted by Philip Kitcher - The Nature of Mathematical Knowledge 10.1
     A reaction: [The quote can be tracked through Kitcher's footnote] He seems to have had in mind the infinitely small.
7. Existence / C. Structure of Existence / 6. Fundamentals / c. Monads
Leibniz proposes monads, since there must be basic things, which are immaterial in order to have unity [Leibniz, by Jolley]
     Full Idea: Leibniz believes in monads because it would be contrary to reason or divine wisdom if everything was compounds, down to infinity; there must be ultimate unified building-blocks; they cannot be material, for material things lack genuine unity.
     From: report of Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Ch.3
     A reaction: It is hard to discern the basis for the claim that only immaterial things can have unity. The Greeks proposed atoms, and we have no reason to think that electrons lack unity.
8. Modes of Existence / A. Relations / 1. Nature of Relations
If relations can be reduced to, or supervene on, monadic properties of relata, they are not real [Leibniz, by Swoyer]
     Full Idea: Leibniz argued that relations could be reduced to monadic properties and so were dispensable, and some still agree, saying relations supervene on monadic properties of the relata, and are not actually real.
     From: report of Gottfried Leibniz (works [1690]) by Chris Swoyer - Properties 7.4
     A reaction: At the very least a background of space and/or time seem required, in addition to any properties the relata may have. y only becomes 'to the left of x' when x appears to its right, so the relation doesn't seem to be intrinsic to y.
Relations aren't in any monad, so they are distributed, so they are not real [Leibniz]
     Full Idea: The relations which connect two monads are not in either the one or the other, but equally in both at once; and therefore properly speaking, in neither. I do not think you would wish to posit an accident which would inhere simultaneously in two subjects.
     From: Gottfried Leibniz (works [1690], G II:517), quoted by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 2.4.3
     A reaction: Where Russell affirms relations as universals, and scholastics make them properties of individuals, Leibniz denies their reality entirely. It seems obvious that once the objects and properties are there, the relations come for free.
8. Modes of Existence / C. Powers and Dispositions / 4. Powers as Essence
Forms have sensation and appetite, the latter being the ability to act on other bodies [Leibniz, by Garber]
     Full Idea: Leibniz's form contains both sensation and appetite, and he seems to associate appetite with the ability a body has to act on another.
     From: report of Gottfried Leibniz (works [1690]) by Daniel Garber - Leibniz:Body,Substance,Monad 3
     A reaction: It strikes me (you may be surprised to hear) that this concept is not unlike Nietzsche's all-mastering 'will to power'. I offer Idea 7140 in evidence.
The essence of a thing is its real possibilities [Leibniz, by Cover/O'Leary-Hawthorne]
     Full Idea: In Leibniz's view, the essence of a thing is fundamentally the real possibilities of that thing.
     From: report of Gottfried Leibniz (works [1690]) by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 4.3.3
     A reaction: Note that the essences are individual. On the whole I would prefer Leibniz in his own words, but this is too good to lose (..but see Idea 12981). It is the aspect of Leibniz that fits perfectly with modern scientific essentialism.
9. Objects / A. Existence of Objects / 5. Individuation / a. Individuation
Leibniz moved from individuation by whole entity to individuation by substantial form [Leibniz, by Garber]
     Full Idea: By 1680 Leibniz had clearly abandoned the 'whole entity' conception of individuation, for a conception grounded in substantial form alone.
     From: report of Gottfried Leibniz (works [1690]) by Daniel Garber - Leibniz:Body,Substance,Monad 2
     A reaction: In other words, Leibniz became more of an Aristotelian, and more of an essentialist.
9. Objects / A. Existence of Objects / 5. Individuation / d. Individuation by haecceity
The laws-of-the-series plays a haecceitist role [Leibniz, by Cover/O'Leary-Hawthorne]
     Full Idea: Leibniz takes the laws-of-the-series to play a haecceitistic role.
     From: report of Gottfried Leibniz (works [1690]) by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 7.5
     A reaction: Idea 13092 for law-in-the-series. He thinks that a law-in-a-series is unique to a substance, and so can individuate it. That is a pretty good proposal, if anything is going to do the job. Perhaps I do believe in haecceities, as unique bundles of powers?
9. Objects / B. Unity of Objects / 1. Unifying an Object / a. Intrinsic unification
Identity of a substance is the law of its persistence [Leibniz]
     Full Idea: For there to be a certain persisting law which involves the future states of that which we conceive as one and the same continuant, this is what I say constitute's a substance's identity.
     From: Gottfried Leibniz (works [1690], G II:264), quoted by David Wiggins - Sameness and Substance 3.1
     A reaction: This is a key remark for those who thing 'persistence conditions' are basic to metaphysics. I'm not so sure.
9. Objects / B. Unity of Objects / 1. Unifying an Object / c. Unity as conceptual
Leibniz bases pure primitive entities on conjunctions of qualitative properties [Leibniz, by Adams,RM]
     Full Idea: Leibniz is committed with apparent consistency to both a purely qualitative character of all thisnesses, and to primitiveness of individual identity. He regards thisnesses as conjunctions of simpler, logically independent suchnesses.
     From: report of Gottfried Leibniz (works [1690]) by Robert Merrihew Adams - Primitive Thisness and Primitive Identity 5
     A reaction: Hence Leibniz is held to say that all of the qualitative properties are 'essential' to the object, since all of them are needed to constitute its identity. Hence absolutely nothing about an object, even an electron, could be different, which is daft.
9. Objects / B. Unity of Objects / 2. Substance / d. Substance defined
Leibnizian substances add concept, law, force, form and soul [Leibniz, by Cover/O'Leary-Hawthorne]
     Full Idea: To the traditional idea of substance (independent, subjects of predication, active, persistent) Leibniz adds, distinctively, complete individual concept, law-of-the-series, active force, form and soul or entelechy.
     From: report of Gottfried Leibniz (works [1690]) by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 6.1.1
     A reaction: 'Form' seems to be Aristotelian, and 'soul' seems ridiculous. I don't think the 'complete concept' is much help. However, the 'law-in-the-series' is very interesting (Idea 13079), if employed sensibly, and 'active force' is spot-on. Powers define reality.
Substances are essentially active [Leibniz, by Jolley]
     Full Idea: For Leibniz, it is the very essence of substances to be sources of activity.
     From: report of Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Ch.2
     A reaction: This makes the views of Leibniz sympathetic to modern essentialism (of which I am a fan), because it places active power at the centre of what it is to exist, rather than action being imposed on matter which is otherwise passive.
9. Objects / C. Structure of Objects / 2. Hylomorphism / c. Form as causal
Leibniz strengthened hylomorphism by connecting it to force in physics [Leibniz, by Garber]
     Full Idea: A standard criticism of the scholastic notions of matter and form is that they are obscure and unintelligible. But in Leibniz's system they are connected directly with notions of active and passive force that play an intelligible roles in his physics.
     From: report of Gottfried Leibniz (works [1690]) by Daniel Garber - Leibniz:Body,Substance,Monad 4
     A reaction: This seems to me to be very appealing. Aristotle was clearly on the right lines, but just ran out of things to say, once he had pointed in the right direction. Maybe 'fields' and 'strings' can fill out the Aristotelian conception of form.
9. Objects / D. Essence of Objects / 9. Essence and Properties
Leibniz's view (that all properties are essential) is extreme essentialism, not its denial [Leibniz, by Mackie,P]
     Full Idea: The view standardly attributed to Leibniz, that makes all an individual's properties essential to it should be regarded as an extreme version of essentialism, not a denial of essentialism.
     From: report of Gottfried Leibniz (works [1690]) by Penelope Mackie - How Things Might Have Been 1.1
     A reaction: Wiggins disagrees, saying that Leibniz was not an essentialist, which is an interesting topic of research for those who are interested. I would take Leibniz to be not an essentialist, on that basis, as essentialism makes a distinction. See Quine on that.
9. Objects / D. Essence of Objects / 15. Against Essentialism
Leibniz was not an essentialist [Leibniz, by Wiggins]
     Full Idea: Leibniz was not an essentialist.
     From: report of Gottfried Leibniz (works [1690]) by David Wiggins - Sameness and Substance Renewed 4.2 n4
     A reaction: Assuming this is right, it is rather helpful, because you can read mountains of Leibniz without ever being quite sure. Mackie says he IS an extreme essentialist, treating all properties as essential. Wiggins makes more sense there.
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]
     Full Idea: It isn't possible to have two particulars that are similar in all respects - for example two eggs - for it is necessary that some things can be said about one of them that cannot be said about the other, else they could be substituted for one another.
     From: Gottfried Leibniz (works [1690]), quoted by David Wiggins - Sameness and Substance 2.2
     A reaction: [from a 'fragment' for which Wiggins gives a reference] This quotation doesn't rest the distinctness of the eggs on some intrinsic difference, but on the fact that we can say different things about the two eggs.
9. Objects / F. Identity among Objects / 9. Sameness
Things are the same if one can be substituted for the other without loss of truth [Leibniz]
     Full Idea: Leibniz's definition is as follows: Things are the same as each other, of which one can be substituted for the other without loss of truth ('salva veritate').
     From: Gottfried Leibniz (works [1690]), quoted by Gottlob Frege - Grundlagen der Arithmetik (Foundations) §65
     A reaction: Frege doesn't give a reference. (Anyone know it?). This famous definition is impressive, but has problems when the items being substituted appear in contexts of belief. 'Oedipus believes Jocasta (his mother!) would make a good wife'.
10. Modality / A. Necessity / 2. Nature of Necessity
Necessary truths are those provable from identities by pure logic in finite steps [Leibniz, by Hacking]
     Full Idea: Leibniz argued that the necessary truths are just those which can be proved from identities by pure logic in a finite number of steps. ...[232] this claim is vindicated by Gentzen's sequent calculus.
     From: report of Gottfried Leibniz (works [1690]) by Ian Hacking - What is Logic? §01
     A reaction: This seems an odd idea, as if there were no necessary truths other than those for which a proof could be constructed. Sounds like intuitionism.
10. Modality / B. Possibility / 1. Possibility
How can things be incompatible, if all positive terms seem to be compatible? [Leibniz]
     Full Idea: It is yet unknown to me what is the reason of the incompossibility of things, or how it is that different essences can be opposed to each other, seeing that all purely positive terms seem to be compatible.
     From: Gottfried Leibniz (works [1690], G VII:194), quoted by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 3.4.4
     A reaction: Since 'heavy' seems straightforwardly opposed to 'light', we would have to ask what he means by 'positive'. The suspicion is that all things are compossible by definition, so it is not surprising that impossibilities are a bit puzzling.
10. Modality / B. Possibility / 5. Contingency
A reason must be given why contingent beings should exist rather than not exist [Leibniz]
     Full Idea: A reason must be given why contingent beings should exist rather than not exist.
     From: Gottfried Leibniz (works [1690])
     A reaction: Spinoza rejects all contingency, but this seems an interesting support for it, even though we may need a reason for something where God does not because it is self-evident.
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]
     Full Idea: Leibniz sets up increasingly stringent conditions possible worlds must meet. The weakest is non-contradiction, for truths of reason; then sufficient reason, for rational worlds; then identity of indiscernibles, for duplicates; then compossibility.
     From: report of Gottfried Leibniz (works [1690]) by Rom Harré - Laws of Nature 4
     A reaction: [my summary of a very nice two pages by Harré] God is the source of the principles which do the narrowing down.
Each monad expresses all its compatible monads; a possible world is the resulting equivalence class [Leibniz, by Rumfitt]
     Full Idea: Leibniz argued that each monad mirrors or expresses every monad with which it is compossible. Hence compossibility is an equivalence relation among monads; possible worlds may then be identified as the corresponding equivalence classes.
     From: report of Gottfried Leibniz (works [1690]) by Ian Rumfitt - The Boundary Stones of Thought 6.1
     A reaction: [Rumfitt cites Benson Mates 1986:IV.1 for this claim] There is an analogous world of all the human minds that are in communication with one another - something like a 'culture'.
Leibniz proposed possible worlds, because they might be evil, where God would not create evil things [Leibniz, by Stewart,M]
     Full Idea: In his early writings the principle of sufficient reason made it difficult for Leibniz to conceive of possible things;...raising this to possible worlds means God does not choose things that are evil, but chooses a world which must have evil in it.
     From: report of Gottfried Leibniz (works [1690]) by Matthew Stewart - The Courtier and the Heretic Ch.14
     A reaction: Where we think of possible worlds as explanations for conditional and counterfactual truths (I take it), Leibniz developed the original idea as part of his huge effort to achieve a consistent theodicy.
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]
     Full Idea: When Leibniz has the grounds of de re counterfactuals in mind, a counterpart picture, we have argued, is at work.
     From: report of Gottfried Leibniz (works [1690]) by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 3.2.2
     A reaction: If Leibniz were a 'superessentialist', then individuals would be totally worldbound (because their relations would be essential). Cover/Hawthorne argue that he is just a 'strong' essentialist, allowing possible counterparts. Quite persuasive.
11. Knowledge Aims / A. Knowledge / 2. Understanding
For Leibniz, divine understanding grasps every conceivable possibility [Leibniz, by Perkins]
     Full Idea: For Leibniz, what is this understanding which God has? What does it contain? All possibilities in all possible combinations, that is, everything which can be conceived.
     From: report of Gottfried Leibniz (works [1690]) by Franklin Perkins - Leibniz: Guide for the Perplexed 2.III
     A reaction: I like this, because it strikes me as essential that understanding should embrace possibilities as well as actualities. Perkins points out that the possibilities are restricted by an awareness of the limitations imposed by combination.
11. Knowledge Aims / C. Knowing Reality / 3. Idealism / a. Idealism
Leibniz said dualism of mind and body is illusion, and there is only mind [Leibniz, by Martin/Barresi]
     Full Idea: Leibniz held that dualism of mind and body is an illusion and that both are really the same thing, and that this thing is mind.
     From: report of Gottfried Leibniz (works [1690]) by R Martin / J Barresi - Introduction to 'Personal Identity' p.22
     A reaction: I am puzzled by this, as Leibniz is famous for the view that mind and body are parallel. See idea 5038, and also 2109 and 2596. Monads are, of course, entirely mental, and are the building blocks of reality. Clearly I (and you) must read more Leibniz.
Leibniz is an idealist insofar as the basic components of his universe are all mental [Leibniz, by Jolley]
     Full Idea: To say that Leibniz is an idealist is to say that simple substances, the basic building-blocks of the universe, are all mental or at least quasi-mental in nature
     From: report of Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Ch.3
     A reaction: This is a bit different from the Berkelian type of idealism, which says that reality consists entirely of events within thinking minds. Is a monad the thinker or the thought?
12. Knowledge Sources / A. A Priori Knowledge / 5. A Priori Synthetic
The categorical imperative is a practical synthetic a priori proposition [Kant]
     Full Idea: With the categorical imperative or law of morality we have a very serious difficulty, because it is a synthetic a priori practical proposition.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 420.50)
14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence
The essence of substance is the law of its changes, as in the series of numbers [Leibniz]
     Full Idea: The essence of substance consists in ...the law of the sequence of changes, as in the nature of the series in numbers.
     From: Gottfried Leibniz (works [1690], A 6.3.326), quoted by Cover,J/O'Leary-Hawthorne,J - Substance and Individuation in Leibniz 6.1.2
     A reaction: Thus we might say, in this spirit, that the essence of number is the successor operation, as defined by Dedekind and Peano (and perhaps their amenability to inductive proof). I like this. Metaphysicians rule - they penetrate the heart of nature.
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]
     Full Idea: The designation of degrees of conscious awareness is one of Leibniz's most significant innovations, and it is fundamental to almost every aspect of his account of monads.
     From: report of Gottfried Leibniz (works [1690]) by Franklin Perkins - Leibniz: Guide for the Perplexed 4.I
     A reaction: A very important development, which seems to have been ignored by philosophers for three hundred years, since they usually treat consciousness as all-or-nothing. Introspection makes degrees obvious, and I suspect sparrows are down the scale.
16. Persons / F. Free Will / 1. Nature of Free Will
Free will is a kind of causality which works independently of other causes [Kant]
     Full Idea: Will is a kind of causality belonging to living beings so far as they are rational. Freedom would then be the property this causality has of being able to work independently of determination by alien causes.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 446.97)
16. Persons / F. Free Will / 2. Sources of Free Will
We shall never be able to comprehend how freedom is possible [Kant]
     Full Idea: We shall never be able to comprehend how freedom is possible.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 456.115)
16. Persons / F. Free Will / 4. For Free Will
We cannot conceive of reason as being externally controlled [Kant]
     Full Idea: We cannot possibly conceive of a reason as being consciously directed from outside in regard to its judgements.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 448.101)
16. Persons / F. Free Will / 5. Against Free Will
Kant made the political will into a pure self-determined "free" will [Kant, by Marx/Engels]
     Full Idea: Kant made the materially motivated determinations of the will of the French bourgeois into pure self-determinations of the "free will", of the will in and for itself.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by K Marx / F Engels - The German Ideology §II
     A reaction: This is the social determinism of Marx and Engels. Most commentators would say that Kant was taking the idea of "free will" from religion rather than politics, but presumably Marx would merely reply "same thing!"
16. Persons / F. Free Will / 6. Determinism / a. Determinism
We think we are free because the causes of the will are unknown; determinism is a false problem [Leibniz]
     Full Idea: The will has its causes, but since we are ignorant of them, we believe ourselves independent. It is this chimera of imaginary independence which revolts us against determinism, and which brings us to believe there are difficulties where there are none.
     From: Gottfried Leibniz (works [1690]), quoted by Matthew Stewart - The Courtier and the Heretic Ch.16
     A reaction: It seems that in his notebooks Leibniz was actually a (Spinozan) determinist. So he should have been, given his view that we live in the best of all possible worlds, and his claim that mind and brain run like two clocks. (Ideas 2114 and 2596)
17. Mind and Body / A. Mind-Body Dualism / 3. Panpsychism
Leibniz has a panpsychist view that physical points are spiritual [Leibniz, by Martin/Barresi]
     Full Idea: In Leibniz's panpsychism, the so-called 'physical' points are souls or spiritual 'monads'.
     From: report of Gottfried Leibniz (works [1690]) by R Martin / J Barresi - Introduction to 'Personal Identity' p.23
     A reaction: I'm not convinced that 'panpsychism' is the right description for Leibniz's theory of monads. I take panpsychism to be either a dualist or a dual aspect (or property dualism) view. Leibniz seems to believe there is strictly one substance.
17. Mind and Body / A. Mind-Body Dualism / 4. Occasionalism
Occasionalism give a false view of natural laws, miracles, and substances [Leibniz, by Jolley]
     Full Idea: Leibniz's three objections to occasionalism are: it disturbs the concept of laws of nature used in physics; it introduces perpetual miracles; and it doesn't recognise activity of substances (leading to the Spinozan heresy that God is the only substance).
     From: report of Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Ch.2
     A reaction: I wonder what would happen if, within the viewpoint of occasionalism, God suddenly packed up and abandoned his job? Presumably the world wouldn't disappear, so there would still be substances, but passive ones, in chaos.
18. Thought / A. Modes of Thought / 3. Emotions / c. Role of emotions
Kant thought emotions are too random and passive to be part of morality [Kant, by Williams,B]
     Full Idea: Kant thinks emotions can't contribute to moral worth because emotions are too capricious, they are too passive, and they are fortuitously distributed by nature.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Bernard Williams - Morality and the emotions p.226
     A reaction: [compressed] If, like Kant, you want morality to be concerned with rational principles, then you will want morality to be clear, stable and consistent - which emotions are not. I'm with Williams on this one.
18. Thought / D. Concepts / 2. Origin of Concepts / a. Origin of concepts
Concepts are ordered, and show eternal possibilities, deriving from God [Leibniz, by Arthur,R]
     Full Idea: Leibniz understood concepts as corresponding to eternal possibilities, with both concepts and their ordering having their foundation in the divine mind.
     From: report of Gottfried Leibniz (works [1690]) by Richard T.W. Arthur - Leibniz 2 'Nominalism'
     A reaction: It is is no longer the fashion to think of concepts as 'ordered', and yet there is a multitude of dependence relations between them.
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]
     Full Idea: Leibniz seems to be the first modern philosopher to focus on sentence-sized units that he called propositions. The Empiricists among the moderns focused on word-sized units like ideas.
     From: report of Gottfried Leibniz (works [1690]) by William D. Hart - The Evolution of Logic 2
     A reaction: Historically, the sentential logic of the Stoics has a claim to have started this one. I find my initial sympathies to be with the empiricists.
20. Action / B. Preliminaries of Action / 2. Willed Action / d. Weakness of will
Limited awareness leads to bad choices, and unconscious awareness makes us choose the bad [Leibniz, by Perkins]
     Full Idea: For Leibniz, while the limits of our knowledge explain why we sometimes choose things we think are good but which turn out to be bad, the force of minute perceptions explains why we sometimes choose things that we know are bad.
     From: report of Gottfried Leibniz (works [1690]) by Franklin Perkins - Leibniz: Guide for the Perplexed 4.IV
     A reaction: To be overwhelmed by selfish greed doesn't sound like a 'minute perception'. Leibniz thinks all desires are reactions to perceptions. Observing our degrees of knowledge is an interesting response to the intellectualist view of weakness of will.
21. Aesthetics / A. Aesthetic Experience / 4. Beauty
Leibniz identified beauty with intellectual perfection [Leibniz, by Gardner]
     Full Idea: Leibniz identified beauty with intellectual perfection.
     From: report of Gottfried Leibniz (works [1690]) by Sebastian Gardner - Aesthetics 1.2.1
     A reaction: Well he would, wouldn't he? Swots like Leibniz are inclined to value things which only they can fully appreciate. There may be intellectual subject matter in the study of a rose, but I do not believe that it is needed to appreciate the beauty.
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / g. Moral responsibility
Humans are moral, and capable of reward and punishment, because of memory and self-consciousness [Leibniz, by Jolley]
     Full Idea: For Leibniz, it is by virtue of possessing memory and self-consciousness that human minds are moral beings, capable of reward and punishment.
     From: report of Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Ch.4
     A reaction: I like this because it makes no mention of free will (though Leibniz struggled to defend free will). I would add meta-thought (the ability to ponder and evaluate our own thinking), which makes a change of mind possible.
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / b. Rational ethics
Kant united religion and philosophy, by basing obedience to law on reason instead of faith [Taylor,R on Kant]
     Full Idea: Kant united the two ideas of virtue (as being and as doing) into the idea of a law that is founded not upon faith but upon reason. Thus in one stroke he united the seemingly irreconcilable philosophical and religious ethics, preserving the best of both.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Richard Taylor - Virtue Ethics: an Introduction Ch.8
     A reaction: An interesting analysis that sounds exactly right. Taylor's point is that Kant subjects himself to an authority, when the underpinnings of the authority are no longer there. There is a religious strand in the altruistic requirements of utilitarianism too.
The categorical imperative says nothing about what our activities and ends should be [MacIntyre on Kant]
     Full Idea: As to what activities we ought to engage in, what ends we should pursue, the categorical imperative seems to be silent.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Alasdair MacIntyre - A Short History of Ethics Ch.14
     A reaction: I think this is the fatal objection to Kant's view. He says, for example, that promise-breaking is inconsistent with a belief that promises are good, but who said promises are good? No ethical system can get started without values.
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature
Kant thought human nature was pure hedonism, so virtue is only possible via the categorical imperative [Foot on Kant]
     Full Idea: Kant was a psychological hedonist about all actions except those done for the sake of the moral law, and this faulty theory of human nature prevented him from seeing that moral virtue might be compatible with the rejection of the categorical imperative.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Philippa Foot - Morality as system of hypothetical imperatives p.165
     A reaction: Nice. Kant wasn't unusual in his view, which seems standard in the Renaissance and Enlightenment. Aristotle understood that it is human nature, on the whole, to want to be a good citizen, since we are social beings.
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / j. Ethics by convention
We must only value what others find acceptable [Kant, by Korsgaard]
     Full Idea: We are limited to pursuits which are acceptable from the standpoint of others; ..hence we can't value just anything, and there are things which we must value.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Christine M. Korsgaard - Intro to 'Creating the Kingdom of Ends' x
     A reaction: This at least moves towards greater objectivity, compared with Idea 9749, but it now seems deeply conservative. Our values become lowest common denominator. We need space for the Nietzschean moral hero, who creates new values.
22. Metaethics / B. Value / 1. Nature of Value / a. Nature of value
Kant focuses exclusively on human values, and neglects cultural and personal values [Kekes on Kant]
     Full Idea: Kant grossly inflated the importance of the human dimension of value in which moral considerations are indeed overriding. He unjustifiably denied the perfectly reasonable contributions of the cultural and personal dimensions to human well-being.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by John Kekes - The Human Condition 05.5
     A reaction: Excellent to see someone talking about the ultimate values that reside behind Kant's theory. Without such assumptions his theory is, frankly, ridiculous (as Mill explained).
22. Metaethics / B. Value / 1. Nature of Value / d. Subjective value
Our rational choices confer value, arising from the sense that we ourselves are important [Kant, by Korsgaard]
     Full Idea: According to Kant, we confer value on the objects of our rational choices. ..When we choose things because they are important to us we are taking ourselves to be important. Hence our humanity is a source of value.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Christine M. Korsgaard - Intro to 'Creating the Kingdom of Ends' ix
     A reaction: He's trying to filter to out our gormless choices with the word 'rational', but it is common sense that I may choose things despite thinking they have little value, like watching soap opera. A more objective account of value seems needed. See 9750!
Values are created by human choices, and are not some intrinsic quality, out there [Kant, by Berlin]
     Full Idea: Kant's fundamental sermon is that a value is made a value (or, at least, a duty) by human choice and not by some intrinsic quality in itself, out there. Values are what humans freely choose to live, fight and die for.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Isaiah Berlin - The Roots of Romanticism Ch.4
     A reaction: If this is right, then it would appear that the great Kant is the father of relativism, which wouldn't please him. However, his whole system rests on what is consistent and rational, and that seems to a value that is above our choices.
22. Metaethics / B. Value / 2. Values / f. Altruism
We may claim noble motives, but we cannot penetrate our secret impulses [Kant]
     Full Idea: We are pleased to flatter ourselves with the false claim to a nobler motive, but in fact we can never, even by the most strenuous self-examination, get to the bottom of our secret impulsions.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 407.26)
     A reaction: Sounds more like Nietzsche than Kant. If some impulsions are totally hidden from us, then they are presumably irrelevant to any rational or moral thinking. Look at the deeds.
Reverence is awareness of a value which demolishes my self-love [Kant]
     Full Idea: Reverence is awareness of a value which demolishes my self-love.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 401.16 n)
     A reaction: Presumably simple love of someone or something could achieve this, without the addition of reverence. I'm suspicious of this idea, because some dreadful people have commanded reverence.
22. Metaethics / C. The Good / 1. Goodness / g. Consequentialism
A good will is not good because of what it achieves [Kant]
     Full Idea: A good will is not good because of what it effects or accomplishes.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 394.3)
     A reaction: This invites the obvious objection of the well-meaning fool, who causes misery despite meaning well. I firmly hold the view that what matters is what we do, not what we intend.
The good of an action is in the mind of the doer, not the consequences [Kant]
     Full Idea: What is essentially good in an action consists in the mental disposition, let the consequences be what they may.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 416.43)
     A reaction: Dreadful idea. I always claim that consequences are relevant in Kant, in formulating and choosing maxims for action, but this idea seems to refute my view. This is a slogan for the Spanish Inquisition.
23. Ethics / B. Contract Ethics / 2. Golden Rule
The 'golden rule' cannot be a universal law as it implies no duties [Kant]
     Full Idea: The 'golden rule' is merely derivative from our principle, but it cannot be a universal law since it isn't the ground of duties to oneself or others (since it implies a breakable contract).
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 430.68 n)
23. Ethics / C. Virtue Theory / 1. Virtue Theory / a. Nature of virtue
Virtue lets a rational being make universal law, and share in the kingdom of ends [Kant]
     Full Idea: A morally good attitude of mind (or virtue) claims the intrinsic value of dignity, because it affords a rational being a share in the making of universal law, which therefore fits him to be a member in a possible kingdom of ends.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 435.79)
23. Ethics / C. Virtue Theory / 1. Virtue Theory / d. Virtue theory critique
Kant thinks virtue becomes passive, and hence morally unaccountable [Kant, by Annas]
     Full Idea: Kant thinks that if virtue becomes a stable disposition of the person, then it turns into a rigid mechanical habit, with respect to which the person is passive, and thus not fully morally accountable.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Julia Annas - The Morality of Happiness 2.1
23. Ethics / C. Virtue Theory / 3. Virtues / f. Compassion
Generosity and pity are vices, because they falsely imply one person's superiority to another [Kant, by Berlin]
     Full Idea: For Kant, generosity is a vice, because it is a form of condescension and patronage, and pity is detestable, because it entails a superiority on the part of the pitier, which Kant stoutly denied.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Isaiah Berlin - The Roots of Romanticism
     A reaction: An interesting view, but being too proud to receive help from friends strikes me as a greater vice. How can friendship and community be built, if we do not rush to help one another when needed? The virtue is generosity without condescension.
23. Ethics / C. Virtue Theory / 3. Virtues / h. Respect
Kantian respect is for humanity and reason (not from love or sympathy or solidarity) [Kant, by Sandel]
     Full Idea: Kantian respect is unlike love. It's unlike sympathy. It's unlike solidarity or fellow feeling. ...Kantian respect is for humanity as such, for a rational capacity that resides, undifferentiated, in all of us.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Michael J. Sandel - Justice: What's the right thing to do? 05
     A reaction: Why is it 'undifferentiated'? If reason is the source of the respect, why don't greater powers of reason command greater respect? The nice thing is that the rejected versions involve bias, but Kant's version does not.
23. Ethics / D. Deontological Ethics / 1. Deontology
If 'maxims' are deeper underlying intentions, Kant can be read as a virtue theorist [Kant, by Statman]
     Full Idea: It has been argued that by 'maxim' Kant does not mean a specific intention for some discrete act, but the underlying intention by which the agent orchestrates his numerous more specific intentions, ...which leads to a virtue reading of Kant.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Daniel Statman - Introduction to Virtue Ethics §7
     A reaction: Kant admired virtue of character, and would want to fit it into the framework of his moral duties. Nevertheless a virtue would often seem to be beyond words, and principles seem to crumble in the face of complex cases.
We can ask how rational goodness is, but also why is rationality good [Putnam on Kant]
     Full Idea: We can reverse the terms of the comparison and ask not how rational is goodness, but why is it good to be rational?
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Hilary Putnam - Reason, Truth and History
     A reaction: [Putnam doesn't mention Kant]. This seems to me to be the biggest question for Kant. See Idea 1403. The main point of tbe romantic movement, I take it, is that purely rational living does not bring happiness or fulfilment.
Other causes can produce nice results, so morality must consist in the law, found only in rational beings [Kant]
     Full Idea: Agreeable results could be brought about by other causes;…therefore nothing but the idea of the law in itself, which is present only in a rational being, can constitute that pre-eminent good which we call moral.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 401.15)
It is basic that moral actions must be done from duty [Kant]
     Full Idea: The first proposition of morality is that to have moral worth an action must be done from duty.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], p.19), quoted by Brian Davies - Introduction to the Philosophy of Religion 9 'Religion'
     A reaction: [p.19 in Beck tr] In Aristotle's account these are 'controlled' actions [enkrateia], which are a step below virtuous actions, which combine reason and pleasure.
The only purely good thing is a good will [Kant]
     Full Idea: It is impossible to conceive anything at all in the world, or even out of it, which can be taken as good without qualification, except a good will.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 393.1)
     A reaction: This is precisely the thought of Epictetus, that the will is the source of goodness, because morality resides in choices (as opposed to character, or states of affairs).
The will is good if its universalised maxim is never in conflict with itself [Kant]
     Full Idea: The will is absolutely good if it cannot be evil - that is, if its maxim, when made into a universal law, can never be in conflict with itself.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 437.81)
Kant follows Rousseau in defining freedom and morality in terms of each other [Taylor,C on Kant]
     Full Idea: Kant follows Rousseau in defining freedom and morality essentially in terms of each other.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Charles Taylor - Sources of the Self §20.2
     A reaction: An interesting comment on the modern tendency to overvalue freedom at the expense of the other civic virtues.
23. Ethics / D. Deontological Ethics / 2. Duty
A categorical imperative sees an action as necessary purely for its own sake [Kant]
     Full Idea: A categorical imperative would be one which represented an action as objectively necessary in itself apart from its relation to a further end.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 414.39)
Telling the truth from duty is quite different from doing so to avoid inconvenience [Kant]
     Full Idea: To tell the truth for the sake of duty is something entirely different from doing so out of concern for inconvenient results.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 402.18)
There are no imperatives for a holy will, as the will is in harmony with moral law [Kant]
     Full Idea: For the divine or holy will there are no imperatives: 'I ought' is here out of place, because 'I will' is already of itself necessarily in harmony with the law.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 414.39)
Men are subject to laws which are both self-made and universal [Kant]
     Full Idea: Man is subject only to laws which are made by himself and yet are universal.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 432.73)
Dutiful actions are judged not by purpose, but by the maxim followed [Kant]
     Full Idea: An action done from duty has its moral worth, not in the purpose to be attained by it, but in the maxim according to which it is decided upon.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 399.13)
Kant was happy with 'good will', even if it had no result [Kant, by Marx/Engels]
     Full Idea: Kant was satisfied with "good will" alone, even if it remained entirely without result.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by K Marx / F Engels - The German Ideology §II
     A reaction: Kant is obviously a million miles away from Marxist pragmatism. And yet the members of the revolutionary class can only be identified and endorsed if they show a particular kind of will.
Kant has to attribute high moral worth to some deeply unattractive human lives [Kant, by Graham]
     Full Idea: An implausible and uncomfortable conclusion to be drawn from Kant's conception of morality is that we must attribute high moral worth to deeply unattractive human lives.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Gordon Graham - Eight Theories of Ethics Ch.6
     A reaction: Graham quotes a loathsome character from a Victorian novel, who coldly 'does her duty'. Indeed it might be that a robot could be programmed with the categorical imperative (though it would need a table of values first). Virtue theory is the answer.
Kantian duty seems to imply conformism with authority [MacIntyre on Kant]
     Full Idea: Anyone educated into the Kantian notion of duty will (so far) have been educated into easy conformism with authority.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Alasdair MacIntyre - A Short History of Ethics Ch.14
     A reaction: The Nazi Eichmann cited Kant at his trial for mass murder. I'm not sure the criticism is fair. There are surely times when the categorical imperative will go quite contrary to what the irrational authorities are implementing?
23. Ethics / D. Deontological Ethics / 3. Universalisability
Almost any precept can be consistently universalized [MacIntyre on Kant]
     Full Idea: With sufficient ingenuity, almost every precept can be consistently universalized.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Alasdair MacIntyre - A Short History of Ethics Ch.14
     A reaction: A concise statement of J.S.Mill's point (Idea 3762). The point is that Kant seems to allow burglary, as long as you don't complain when you are burgled. What sort of maxim would a suicidal mass murderer being willing to universalize?
23. Ethics / D. Deontological Ethics / 4. Categorical Imperative
The intuition behind the categorical imperative is that one ought not to make an exception of oneself [Kant, by Finlayson]
     Full Idea: Kant's first formulation of the categorical imperative is supposed to capture the widespread intuition that one ought not to make an exception of oneself.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by James Gordon Finlayson - Habermas Ch.6:83
     A reaction: Interesting. I always take the plain English version to be 'what if everybody did that?' Suppose I were to forgive everyone, except myself?
Universalising a maxim needs to first stipulate the right description for the action [Anscombe on Kant]
     Full Idea: Kant's rule about universalisable maxims is useless without stipulations as to what shall count as a relevant description of an action with a view to constructing a maxim about it.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by G.E.M. Anscombe - Modern Moral Philosophy p.176
     A reaction: This is one of the key objections to Kant (along with his need for preliminary values). One man's 'terrorist' is another man's 'freedom fighter'. The charge adds up to Nietzsche's view, that Kant could never shake off his very conventional prejudices.
The categorical imperative will not suggest maxims suitable for testing [MacIntyre on Kant]
     Full Idea: The doctrine of the categorical imperative provides me with a test for rejecting proposed maxims; it does not tell me whence I am to derive the maxims which first provide the need for a test.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Alasdair MacIntyre - A Short History of Ethics Ch.14
     A reaction: Nice objection. 'What if we all stood on one leg for an hour (in this crisis)?' Question for Kant: what sort of maxims should we consider, when faced with a dilemma. Mill will obviously suggest happiness as a target. Good of society? My own good?
I can universalize a selfish maxim, if it is expressed in a way that only applies to me [MacIntyre on Kant]
     Full Idea: If we enquire whether I can consistently universalize the maxim 'I may break my promises only when.....', the gap can be filled by a description devised so that it will apply to my present circumstances, but to very few others.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Alasdair MacIntyre - A Short History of Ethics Ch.14
     A reaction: Another good objection to Kant. There is just a huge problem with how you state the maxim under discussion. One man's 'terrorist' is another man's 'freedom fighter'. 'Do everything possible to implement the will of God'.
Suicide, false promises, neglected talent, and lack of charity all involve contradictions of principle [Kant, by PG]
     Full Idea: Kant's four illustrations of the Categorical Imperative are: the contradiction of suicide, the contradiction of false promises, the contradiction of neglecting your talents, and the contradiction of neglecting charity.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 422.53) by PG - Db (ideas)
Always treat yourself and others as an end, and never simply as a means [Kant]
     Full Idea: Act in such a way that you always treat humanity whether in your own person or in the person of any other, never simply as a means, but always at the same time as an end.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], AA429 p.96), quoted by Terry Pinkard - German Philosophy 1760-1860 02
     A reaction: This sets up the Kingdom of Ends. Note that this does not prohibit using people as a means. It just asks you to respect waiters and shop assistants. It seems to say you should not treat 'your own person' merely as a means. Prostitution?
If lying were the universal law it would make promises impossible [Kant]
     Full Idea: I can indeed will to lie, but I can by no means will a universal law of lying; for by such a law there could properly be no promises at all.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 403.19)
Why couldn't all rational beings accept outrageously immoral rules of conduct? [Mill on Kant]
     Full Idea: Kant fails, almost grotesquely, to show that there would be any logical or physical impossibility in the adoption by all rational beings of the most outrageously immoral rules of conduct.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by John Stuart Mill - Utilitarianism Ch.1
Morality is the creation of the laws that enable a Kingdom of Ends [Kant]
     Full Idea: Morality consists in the relation of all action to the making of laws whereby alone a kingdom of ends is possible.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], AA434 p.102), quoted by Terry Pinkard - German Philosophy 1760-1860 02
     A reaction: Each individual gives themselves a law in the categorical imperative. Presumably the kingdom of ends is the convergence of these laws, because the categorical imperative has to be rational.
The categorical imperative smells of cruelty [Nietzsche on Kant]
     Full Idea: The categorical imperative smells of cruelty.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Friedrich Nietzsche - On the Genealogy of Morals II.§6
     A reaction: I presume this is because it is so pure and impersonal. Seems harsh. Nowadays we don't think pure just has to be cruel, but Nietzsche may have assumed it had to be.
Act according to a maxim you can will as a universal law [Kant]
     Full Idea: I ought never to act except in such a way that I can also will that my maxim should become a universal law.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 402.17)
Act as if your maxim were to become a universal law of nature [Kant]
     Full Idea: The universal imperative may also run as follows: 'Act as if the maxim of your action were to become through your will a universal law of nature'.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 421.52)
23. Ethics / D. Deontological Ethics / 5. Persons as Ends
The maxim of an action is chosen, and not externally imposed [Kant, by Bowie]
     Full Idea: Kant does not dictate what the maxim (the principle) of my action should be, and this is the crux. The individual has to decide the basis for their actions, rather than have it imposed on them, which differentiates us from the world of nature.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Andrew Bowie - German Philosophy: a very short introduction 1
     A reaction: Apparenty this inspired the Romantic era (the Age of Freedom?) just as much as the French Revolution. It is the chief doctrine of extreme individualism - except that the maxim chosen should be one on which rational beings should agree.
Always treat humanity as an end and never as a means only [Kant]
     Full Idea: Act so that you treat humanity, whether in your own person or that of another always as an end and never as a means only.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]), quoted by Gordon Graham - Eight Theories of Ethics Ch.6
     A reaction: Does this really mean that I can't just negligently buy a newspaper without making an effort to respect its seller? How do I ensure that I treat myself as an end, and don't slip into treating myself as a means? What would that be like? Prostitution?
Rational beings necessarily conceive their own existence as an end in itself [Kant]
     Full Idea: Rational nature exists as an end in itself; this is the way in which a man necessarily conceives his own existence.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 429.66)
23. Ethics / D. Deontological Ethics / 6. Motivation for Duty
For Kant, even a person who lacks all sympathy for others still has a motive for benevolence [Kant, by Hursthouse]
     Full Idea: Kant, we may suppose, would say that if a man were 'cold in temperament and indifferent to the sufferings of others', he would still find in himself a source that would enable him to do what is benevolent.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Rosalind Hursthouse - On Virtue Ethics Ch.4
     A reaction: This identifies a strong appeal of Kant's theory - that whether we are morally good should not be a matter of luck in our upbringing or natural temperament. How is the vicious person to be saved, if not by reason?
If we are required to give moral thought the highest priority, this gives morality no content [Williams,B on Kant]
     Full Idea: The Kantian view of what is important is that people should give moral considerations the highest deliberative priority, which Hegel attacked because it gives moral thought no content.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Bernard Williams - Ethics and the Limits of Philosophy Ch.10
     A reaction: Interesting. This points towards empathy and compassion as motivators, rather than reason, because there is some content to the morality, which calls out to us.
If Kant lives by self-administered laws, this is as feeble as self-administered punishments [Kierkegaard on Kant]
     Full Idea: Kant thought that man is his own law - he binds himself under the law which he gives himself. This is how lawlessness or experimentation is established. This is no more rigorously earnest than Sancho Panza's self-administered blows to his own ass.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Sřren Kierkegaard - The Journals of Kierkegaard JP-I, 188
     A reaction: It really is tempting to go easy on yourself rather than on others. Kant had the right ideas, but human beings aren't as disciplined as the categorical imperative requires. [SY]
Only a good will makes us worthy of happiness [Kant]
     Full Idea: A good will seems to constitute the indispensable condition of our very worthiness to be happy.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 393.2)
The function of reason is to produce a good will [Kant]
     Full Idea: Since reason has been imparted to us as a practical power, which thus influences the will, its true function must be to produce a will which is good.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 396.7)
Our inclinations are not innately desirable; in fact most rational beings would like to be rid of them [Kant]
     Full Idea: Inclinations, as a source of needs, are so far from having an absolute value to make them desirable for their own sake that it must rather be the universal wish of every rational being to be wholly free from them.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 428.65)
Actions where people spread happiness because they enjoy it have no genuine moral worth [Kant]
     Full Idea: There are many spirits of so sympathetic a temper that they find an inner pleasure in spreading happiness around them. ..I maintain that an action of this kind, however right and amiable it may be, has still no genuinely moral worth.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], p.66)
     A reaction: We understand what he means (that principle is everything), but this still seems a big hole in his account, one which drives us to Aristotle's sensible views about what a nice person is really like.
24. Political Theory / A. Basis of a State / 3. Natural Values / c. Natural rights
Rational beings have a right to share in the end of an action, not just be part of the means [Kant]
     Full Idea: A violator of the rights of man intends to use the person of others merely as a means, not considering that they should be used only as beings who must themselves be able to share in the end of the very same action.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 430.68)
25. Social Practice / A. Freedoms / 4. Free market
Kant is the father of the notion of exploitation as an evil [Kant, by Berlin]
     Full Idea: Kant is the father of the notion of exploitation as an evil.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Isaiah Berlin - The Roots of Romanticism Ch.3
     A reaction: This is central to the idea of Kant as the main father of liberalism, the idea that every individual deserves respect, and hence has rights. The idea would also be a crucial element in Europe turning against slavery.
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]
     Full Idea: Leibniz rejects Hobbes's legal positivism in favour of the older natural law theory associated with Aquinas (which says nothing can be a law unless it derives from natural justice). The older view was revived at Nuremberg, to prosecute Nazis.
     From: report of Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Ch.7
     A reaction: This seems to suggest that Hobbes and co were using Ockham's Razor to eliminate morality from the law, but that the Nuremberg situation (and modern trials in The Hague) show that there is a necessity for natural law in international situations.
Kant completed Grotius's project of a non-religious basis for natural law [Scruton on Kant]
     Full Idea: Kant is often held to have completed a task begun by Grotius, giving a basis for natural law which does not invoke the will of God, but rather commands God himself to obedience.
     From: comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Roger Scruton - A Dictionary of Political Thought 'Kant'
     A reaction: This project, if successful, would clinch the naturalistic response to the Euthyphro Question (Ideas 336 and 337). It is a key issue for atheists, who generally wish to deny that their lack of religion leads inevitably to amorality.
25. Social Practice / D. Justice / 3. Punishment / b. Retribution for crime
Retributive punishment is better than being sent to hospital for your crimes [Kant, by Berlin]
     Full Idea: Kant believed in retributive punishment, because he thought that a man would prefer being sent to prison to going to hospital.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Isaiah Berlin - The Roots of Romanticism Ch.4
     A reaction: That is, even criminals welcome the dignity of being treated as if they are actually responsible for their deeds, and are not just victims of inner forces. Criminals demand free will! Truth is best, though; many of them are not responsible at all.
25. Social Practice / F. Life Issues / 6. Animal Rights
Non-rational beings only have a relative value, as means rather than as ends [Kant]
     Full Idea: Beings whose existence depends not on our will but on nature have, if they are non-rational beings, only a relative value as means and are consequently called 'things' (rather than 'persons').
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 428.65)
     A reaction: Ugh. Is there nothing in between 'persons' and 'things'? How about a deeply comatose human, or an embryo? It is a gross distortion to think of a chimpanzee as a 'thing'.
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / g. Atomism
Leibniz rejected atoms, because they must be elastic, and hence have parts [Leibniz, by Garber]
     Full Idea: Leibniz held that there can be no atoms in nature, nothing perfectly solid and hard, since elasticity entails the existence of smaller parts that can move with respect to one another.
     From: report of Gottfried Leibniz (works [1690]) by Daniel Garber - Leibniz:Body,Substance,Monad 5
     A reaction: Thus, I suppose, we discover that atoms have mercurial electron shells. Are quarks or electrons elastic? The debate about true atoms is not over, and probably never will be. Leibniz's point is a good one.
Microscopes and the continuum suggest that matter is endlessly divisible [Leibniz]
     Full Idea: Micrographers observe qualities of larger things found in smaller things. And if this proceeds to infinity - which is possible since the continuum is divisible to infinity - any atom will be an infinite species, and there will be worlds within worlds.
     From: Gottfried Leibniz (works [1690], A VI ii 241)
     A reaction: [a work of the 1670s] The microscope had a huge impact on Leibniz, much more than the telescope.
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]
     Full Idea: Leibniz seems never to have made up his mind completely on how to accommodate bodies within a metaphysic which recognises only soul-like entities as fully real.
     From: comment on Gottfried Leibniz (works [1690]) by Nicholas Jolley - Leibniz Intro
     A reaction: [The soul-like entities are his 'monads']. His choice must be to either say they are unreal, or that they are real and separate from the monads, or that they are a manifestation of the monads. His problem, not mine.
26. Natural Theory / A. Speculations on Nature / 7. Later Matter Theories / c. Matter as extension
Leibniz eventually said resistance, rather than extension, was the essence of body [Leibniz, by Pasnau]
     Full Idea: Leibniz eventually rejected extension altogether as part of the essence of body, and replaced it with resistance.
     From: report of Gottfried Leibniz (works [1690]) by Robert Pasnau - Metaphysical Themes 1274-1671 15.5
     A reaction: This makes body consist of active force, rather than mere geometry. Much better.
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / c. Essence and laws
Leibniz wanted to explain motion and its laws by the nature of body [Leibniz, by Garber]
     Full Idea: Leibniz seeks the big picture: the nature of body as a grounding for an account of motion and its laws.
     From: report of Gottfried Leibniz (works [1690]) by Daniel Garber - Leibniz:Body,Substance,Monad 4
     A reaction: Garber is contrasting this with Newton's approaches, who just pleads ignorance of the bigger picture. Essentialists must beware of inventing a bigger picture simply because they desperately want a bigger picture.
The law within something fixes its persistence, and accords with general laws of nature [Leibniz]
     Full Idea: Nothing is permanent in a substance except the law itself which determines the continuous succession of its states and accords within the individual substance with the laws of nature that govern the whole world.
     From: Gottfried Leibniz (works [1690], G II:263), quoted by David Wiggins - Sameness and Substance 3 epig
     A reaction: An interesting link between the law-of-series within a substance, and the broader concept of laws outside it.
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]
     Full Idea: Unlike most philosophers prior to the twentieth century, Leibniz was committed to the causal completeness of physics.
     From: report of Gottfried Leibniz (works [1690]) by David Papineau - Thinking about Consciousness 1.4
     A reaction: It has been suggested that Leibniz was actually, in private, a determinist (see Idea 7841), which would fit. Leibniz is enigmatic, but he may have proposed the closure of physics to glorify God, only to find that God was beginning to look irrelevant.
27. Natural Reality / A. Classical Physics / 1. Mechanics / c. Forces
Leibniz uses 'force' to mean both activity and potential [Leibniz]
     Full Idea: At this early period exegetical problems abound, since Leibniz uses 'force' both for actually acting forces and for potentials or powers.
     From: Gottfried Leibniz (works [1690], 9.II), quoted by Harré,R./Madden,E.H. - Causal Powers 9.II.B
     A reaction: I take Leibniz to be a key figure in the development of the Aristotelian approach, because he connected Aristotelian potential and essence with 'force' in the new physics. This is helpful in reading him correctly.
28. God / A. Divine Nature / 6. Divine Morality / b. Euthyphro question
We can only know we should obey God if we already have moral standards for judging God [Kant, by MacIntyre]
     Full Idea: On Kant's view it never follows that we ought to do what God commands, for we would have to know that we always ought to do what God commands, but that would need a standard of moral judgement independent of God's commands. God's commands are redundant.
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Alasdair MacIntyre - After Virtue: a Study in Moral Theory Ch.4
     A reaction: This strikes me as a very powerful argument, even an undeniable one. How could you accept any authority if you didn't have some standards for accepting it, even if the standard was just to be awestruck by someone's charisma and will-power?
We judge God to be good by a priori standards of moral perfection [Kant]
     Full Idea: Where do we get the concept of God as the highest good? Solely from the idea of moral perfection, which reason traces a priori.
     From: Immanuel Kant (Groundwork of the Metaphysic of Morals [1785], 408.29)
28. God / B. Proving God / 2. Proofs of Reason / a. Ontological Proof
God's existence is either necessary or impossible [Leibniz, by Scruton]
     Full Idea: Leibniz said that the ontological argument does not prove God's existence, but only the God's existence is either necessary or impossible.
     From: report of Gottfried Leibniz (works [1690]) by Roger Scruton - Modern Philosophy:introduction and survey 13.5
28. God / B. Proving God / 2. Proofs of Reason / c. Moral Argument
God is not proved by reason, but is a postulate of moral thinking [Kant, by Davies,B]
     Full Idea: Kant speaks of God not as something known or proved to exist by virtue of rational argument, but as a postulate of moral reflection (that is, of 'practical reason').
     From: report of Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Brian Davies - Introduction to the Philosophy of Religion 9 'Morality'
     A reaction: Presumably it is a necessary postulate, which makes this a transcendental argument, surely?
28. God / C. Attitudes to God / 5. Atheism
Leibniz was closer than Spinoza to atheism [Leibniz, by Stewart,M]
     Full Idea: Leibniz sailed closer to the winds of unbelief than Spinoza did.
     From: report of Gottfried Leibniz (works [1690]) by Matthew Stewart - The Courtier and the Heretic Ch.16
     A reaction: This is an unusual view, but Stewart's view is that whereas Spinoza is always sincere in his writings, Leibniz is inclined to put a very conservative spin on his opinions. A key question for Leibniz is "Is God merely a monad?"