Combining Philosophers

All the ideas for Robert C. Stalnaker, Baron de Montesquieu and Giuseppe Peano

expand these ideas     |    start again     |     specify just one area for these philosophers


128 ideas

1. Philosophy / E. Nature of Metaphysics / 1. Nature of Metaphysics
I don't think Lewis's cost-benefit reflective equilibrium approach offers enough guidance [Stalnaker]
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / a. Systems of modal logic
Non-S5 can talk of contingent or necessary necessities [Stalnaker]
4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
To say there could have been people who don't exist, but deny those possible things, rejects Barcan [Stalnaker, by Rumfitt]
4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / b. Axiom of Extensionality I
In modal set theory, sets only exist in a possible world if that world contains all of its members [Stalnaker]
5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
Logical space is abstracted from the actual world [Stalnaker]
5. Theory of Logic / E. Structures of Logic / 1. Logical Form
We regiment to get semantic structure, for evaluating arguments, and understanding complexities [Stalnaker]
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / e. or
In 'S was F or some other than S was F', the disjuncts need S, but the whole disjunction doesn't [Stalnaker]
5. Theory of Logic / F. Referring in Logic / 1. Naming / c. Names as referential
To understand a name (unlike a description) picking the thing out is sufficient? [Stalnaker]
6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / a. Axioms for numbers
Numbers have been defined in terms of 'successors' to the concept of 'zero' [Peano, by Blackburn]
6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / d. Peano arithmetic
All models of Peano axioms are isomorphic, so the models all seem equally good for natural numbers [Cartwright,R on Peano]
PA concerns any entities which satisfy the axioms [Peano, by Bostock]
Peano axioms not only support arithmetic, but are also fairly obvious [Peano, by Russell]
0 is a non-successor number, all successors are numbers, successors can't duplicate, if P(n) and P(n+1) then P(all-n) [Peano, by Flew]
6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / g. Incompleteness of Arithmetic
We can add Reflexion Principles to Peano Arithmetic, which assert its consistency or soundness [Halbach on Peano]
6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism
Arithmetic can have even simpler logical premises than the Peano Axioms [Russell on Peano]
7. Existence / A. Nature of Existence / 1. Nature of Existence
Some say what exists must do so, and nothing else could possible exist [Stalnaker]
A nominalist view says existence is having spatio-temporal location [Stalnaker]
8. Modes of Existence / B. Properties / 1. Nature of Properties
Properties are modal, involving possible situations where they are exemplified [Stalnaker]
8. Modes of Existence / B. Properties / 10. Properties as Predicates
I accept a hierarchy of properties of properties of properties [Stalnaker]
8. Modes of Existence / C. Powers and Dispositions / 6. Dispositions / a. Dispositions
Dispositions have modal properties, of which properties things would have counterfactually [Stalnaker]
9. Objects / A. Existence of Objects / 4. Impossible objects
Predicates can't apply to what doesn't exist [Stalnaker]
9. Objects / C. Structure of Objects / 7. Substratum
For the bare particular view, properties must be features, not just groups of objects [Stalnaker]
Possible worlds allow separating all the properties, without hitting a bare particular [Stalnaker]
9. Objects / D. Essence of Objects / 7. Essence and Necessity / a. Essence as necessary properties
An essential property is one had in all the possible worlds where a thing exists [Stalnaker]
'Socrates is essentially human' seems to say nothing could be Socrates if it was not human [Stalnaker]
9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities
Necessarily self-identical, or being what it is, or its world-indexed properties, aren't essential [Stalnaker]
9. Objects / D. Essence of Objects / 15. Against Essentialism
Bare particular anti-essentialism makes no sense within modal logic semantics [Stalnaker]
9. Objects / F. Identity among Objects / 7. Indiscernible Objects
The bundle theory makes the identity of indiscernibles a necessity, since the thing is the properties [Stalnaker]
10. Modality / A. Necessity / 3. Types of Necessity
Strong necessity is always true; weak necessity is cannot be false [Stalnaker]
10. Modality / B. Possibility / 8. Conditionals / a. Conditionals
In nearby worlds where A is true, 'if A,B' is true or false if B is true or false [Stalnaker]
10. Modality / B. Possibility / 8. Conditionals / d. Non-truthfunction conditionals
Conditionals are true if minimal revision of the antecedent verifies the consequent [Stalnaker, by Read]
10. Modality / C. Sources of Modality / 2. Necessity as Primitive
Necessity and possibility are fundamental, and there can be no reductive analysis of them [Stalnaker]
10. Modality / C. Sources of Modality / 4. Necessity from Concepts
The necessity of a proposition concerns reality, not our words or concepts [Stalnaker]
Conceptual possibilities are metaphysical possibilities we can conceive of [Stalnaker]
10. Modality / C. Sources of Modality / 5. Modality from Actuality
Modal concepts are central to the actual world, and shouldn't need extravagant metaphysics [Stalnaker]
10. Modality / D. Knowledge of Modality / 3. A Posteriori Necessary
Critics say there are just an a priori necessary part, and an a posteriori contingent part [Stalnaker]
10. Modality / E. Possible worlds / 1. Possible Worlds / a. Possible worlds
A 'centred' world is an ordered triple of world, individual and time [Stalnaker]
If it might be true, it might be true in particular ways, and possible worlds describe such ways [Stalnaker]
Possible worlds are ontologically neutral, but a commitment to possibilities remains [Stalnaker]
Possible worlds allow discussion of modality without controversial modal auxiliaries [Stalnaker]
10. Modality / E. Possible worlds / 1. Possible Worlds / d. Possible worlds actualism
Given actualism, how can there be possible individuals, other than the actual ones? [Stalnaker]
10. Modality / E. Possible worlds / 2. Nature of Possible Worlds / a. Nature of possible worlds
A possible world is the ontological analogue of hypothetical beliefs [Stalnaker]
We can take 'ways things might have been' as irreducible elements in our ontology [Stalnaker, by Lycan]
Kripke's possible worlds are methodological, not metaphysical [Stalnaker]
Possible worlds are properties [Stalnaker]
Possible worlds don't reduce modality, they regiment it to reveal its structure [Stalnaker]
I think of worlds as cells (rather than points) in logical space [Stalnaker]
10. Modality / E. Possible worlds / 3. Transworld Objects / a. Transworld identity
Why imagine that Babe Ruth might be a billiard ball; nothing useful could be said about the ball [Stalnaker]
10. Modality / E. Possible worlds / 3. Transworld Objects / b. Rigid designation
Rigid designation seems to presuppose that differing worlds contain the same individuals [Stalnaker]
10. Modality / E. Possible worlds / 3. Transworld Objects / c. Counterparts
Unlike Lewis, I defend an actualist version of counterpart theory [Stalnaker]
If possible worlds really differ, I can't be in more than one at a time [Stalnaker]
If counterparts exist strictly in one world only, this seems to be extreme invariant essentialism [Stalnaker]
Modal properties depend on the choice of a counterpart, which is unconstrained by metaphysics [Stalnaker]
10. Modality / E. Possible worlds / 3. Transworld Objects / d. Haecceitism
Anti-haecceitism says there is no more to an individual than meeting some qualitative conditions [Stalnaker]
18. Thought / C. Content / 6. Broad Content
Meanings aren't in the head, but that is because they are abstract [Stalnaker]
How can we know what we are thinking, if content depends on something we don't know? [Stalnaker]
19. Language / A. Nature of Meaning / 1. Meaning
If you don't know what you say you can't mean it; what people say usually fits what they mean [Stalnaker]
19. Language / B. Reference / 3. Direct Reference / b. Causal reference
In the use of a name, many individuals are causally involved, but they aren't all the referent [Stalnaker]
One view says the causal story is built into the description that is the name's content [Stalnaker]
19. Language / C. Assigning Meanings / 2. Semantics
'Descriptive' semantics gives a system for a language; 'foundational' semantics give underlying facts [Stalnaker]
We still lack an agreed semantics for quantifiers in natural language [Stalnaker]
19. Language / C. Assigning Meanings / 6. Truth-Conditions Semantics
To understand an utterance, you must understand what the world would be like if it is true [Stalnaker]
19. Language / C. Assigning Meanings / 8. Possible Worlds Semantics
Extensional semantics has individuals and sets; modal semantics has intensions, functions of world to extension [Stalnaker]
Possible world semantics may not reduce modality, but it can explain it [Stalnaker]
19. Language / C. Assigning Meanings / 10. Two-Dimensional Semantics
Two-D says that a posteriori is primary and contingent, and the necessity is the secondary intension [Stalnaker]
In one view, the secondary intension is metasemantic, about how the thinker relates to the content [Stalnaker]
19. Language / D. Propositions / 1. Propositions
I take propositions to be truth conditions [Stalnaker]
A theory of propositions at least needs primitive properties of consistency and of truth [Stalnaker]
19. Language / D. Propositions / 3. Concrete Propositions
A 'Russellian proposition' is an ordered sequence of individual, properties and relations [Stalnaker]
Propositions presumably don't exist if the things they refer to don't exist [Stalnaker]
19. Language / F. Communication / 2. Assertion
An assertion aims to add to the content of a context [Stalnaker, by Magidor]
19. Language / F. Communication / 5. Pragmatics / b. Implicature
An assertion is an attempt to rule out certain possibilities, narrowing things down for good planning [Stalnaker, by Schroeter]
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / j. Ethics by convention
True goodness is political, and consists of love of and submission to the laws [Montesquieu]
24. Political Theory / A. Basis of a State / 1. A People / b. The natural life
Primitive people would be too vulnerable and timid to attack anyone, so peace would reign [Montesquieu]
Men do not desire to subjugate one another; domination is a complex and advanced idea [Montesquieu]
24. Political Theory / A. Basis of a State / 1. A People / c. A unified people
People are drawn into society by needs, shared fears, pleasure, and knowledge [Montesquieu]
People are guided by a multitude of influences, from which the spirit of a nation emerges [Montesquieu]
24. Political Theory / A. Basis of a State / 2. Population / b. State population
In small republics citizens identify with the public good, and abuses are fewer [Montesquieu]
In a large republic there is too much wealth for individuals to manage it [Montesquieu]
24. Political Theory / A. Basis of a State / 4. Original Position / b. Veil of ignorance
The rich would never submit to a lottery deciding which part of their society should be slaves [Montesquieu]
24. Political Theory / B. Nature of a State / 1. Purpose of a State
All states aim at preservation, and then have distinctive individual purposes [Montesquieu]
24. Political Theory / C. Ruling a State / 2. Leaders / a. Autocracy
The natural power of a father suggests rule by one person, but that authority can be spread [Montesquieu]
24. Political Theory / C. Ruling a State / 2. Leaders / b. Monarchy
Monarchies can act more quickly, because one person is in charge [Montesquieu]
The nobility are an indispensable part of a monarchy [Montesquieu]
Monarchs must not just have links to the people; they need a body which maintains the laws [Montesquieu]
Ambition is good in a monarchy, because the monarch can always restrain it [Montesquieu]
In monarchies, men's actions are judged by their grand appearance, not their virtues [Montesquieu]
In a monarchy, the nobility must be hereditary, to bind them together [Montesquieu]
24. Political Theory / C. Ruling a State / 2. Leaders / c. Despotism
A despot's agents must be given power, so they inevitably become corrupt [Montesquieu]
Despotism and honour are incompatible, because honour scorns his power, and lives by rules [Montesquieu]
Tyranny is either real violence, or the imposition of unpopular legislation [Montesquieu]
Despots are always lazy and ignorant, so they always delegate their power to a vizier [Montesquieu]
The will of a despot is an enigma, so magistrates can only follow their own will [Montesquieu]
24. Political Theory / C. Ruling a State / 2. Leaders / d. Elites
If the nobility is numerous, the senate is the artistocracy, and the nobles are a democracy [Montesquieu]
Aristocracy is democratic if they resemble the people, but not if they resemble the monarch [Montesquieu]
Great inequality between aristocrats and the rest is bad - and also among aristocrats themselves [Montesquieu]
24. Political Theory / C. Ruling a State / 3. Government / a. Government
If a government is to be preserved, it must first be loved [Montesquieu]
A government has a legislature, an international executive, and a domestic executive [Montesquieu]
24. Political Theory / C. Ruling a State / 3. Government / b. Legislature
The judiciary must be separate from the legislature, to avoid arbitrary power [Montesquieu]
24. Political Theory / D. Ideologies / 5. Democracy / b. Consultation
The fundamental laws of a democracy decide who can vote [Montesquieu]
It is basic to a democracy that the people themselves must name their ministers [Montesquieu]
Voting should be public, so the lower classes can be influenced by the example of notable people [Montesquieu]
All citizens (apart from the very humble poor) should choose their representatives [Montesquieu]
24. Political Theory / D. Ideologies / 5. Democracy / c. Direct democracy
In a democracy the people should manage themselves, and only delegate what they can't do [Montesquieu]
A democratic assembly must have a fixed number, to see whether everyone has spoken [Montesquieu]
24. Political Theory / D. Ideologies / 5. Democracy / d. Representative democracy
If deputies represent people, they are accountable, but less so if they represent places [Montesquieu]
25. Social Practice / A. Freedoms / 1. Slavery
Slaves are not members of the society, so no law can forbid them to run away [Montesquieu]
Slavery is entirely bad; the master abandons the virtues, and they are pointless in the slave [Montesquieu]
The demand for slavery is just the masters' demand for luxury [Montesquieu]
25. Social Practice / A. Freedoms / 3. Free speech
Freedom of speech and writing, within the law, is essential to preserve liberty [Montesquieu]
25. Social Practice / A. Freedoms / 5. Freedom of lifestyle
Freedom in society is ability to do what is right, and not having to do what is wrong [Montesquieu]
25. Social Practice / B. Equalities / 1. Grounds of equality
No one even thinks of equality in monarchies and despotism; they all want superiority [Montesquieu]
Equality is not command by everyone or no one, but command and obedience among equals [Montesquieu]
25. Social Practice / B. Equalities / 2. Political equality
Democracy is corrupted by lack of equality, or by extreme equality (between rulers and ruled) [Montesquieu]
25. Social Practice / B. Equalities / 4. Economic equality
Some equality can be achieved by social categories, combined with taxes and poor relief [Montesquieu]
Democracies may sometimes need to restrict equality [Montesquieu]
25. Social Practice / D. Justice / 2. The Law / c. Natural law
Prior to positive laws there is natural equity, of obedience, gratitude, dependence and merit [Montesquieu]
Sensation gives animals natural laws, but knowledge can make them break them [Montesquieu]
25. Social Practice / D. Justice / 3. Punishment / a. Right to punish
The death penalty is permissible, because its victims enjoyed the protection of that law [Montesquieu]
If religion teaches determinism, penalties must be severe; if free will, then that is different [Montesquieu]
25. Social Practice / E. Policies / 1. War / d. Non-combatants
The only right victors have over captives is the protection of the former [Montesquieu]
25. Social Practice / E. Policies / 2. Religion in Society
The clergy are essential to a monarchy, but dangerous in a republic [Montesquieu]
Religion has the most influence in despotic states, and reinforces veneration for the ruler [Montesquieu]
Religion can support the state when the law fails to do so [Montesquieu]
French slavery was accepted because it was the best method of religious conversion [Montesquieu]
25. Social Practice / E. Policies / 5. Education / a. Aims of education
In monarchies education ennobles people, and in despotisms it debases them [Montesquieu]
25. Social Practice / E. Policies / 5. Education / c. Teaching
Teaching is the best practice of the general virtue that leads us to love everyone [Montesquieu]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / c. Essence and laws
Laws are the necessary relations that derive from the nature of things [Montesquieu]