Combining Texts

All the ideas for 'Intro to 'Modality and Tense'', 'Substitutional Classes and Relations' and 'On the Syllogism IV'

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

---

15 ideas

1. Philosophy / D. Nature of Philosophy / 7. Despair over Philosophy

9208	Philosophers with a new concept are like children with a new toy [Fine,K]

2. Reason / D. Definition / 7. Contextual Definition

21560

Any linguistic expression may lack meaning when taken out of context [Russell]

2. Reason / F. Fallacies / 8. Category Mistake / a. Category mistakes

21561

'The number one is bald' or 'the number one is fond of cream cheese' are meaningless [Russell]

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / p. Axiom of Reducibility

18130

Axiom of Reducibility: there is always a function of the lowest possible order in a given level [Russell, by Bostock]

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

De Morgan started the study of relations and their properties [De Morgan, by Walicki]

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD]

7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete

9210	Possible objects are abstract; actual concrete objects are possible; so abstract/concrete are compatible [Fine,K]

7. Existence / D. Theories of Reality / 3. Reality

9211	A non-standard realism, with no privileged standpoint, might challenge its absoluteness or coherence [Fine,K]

8. Modes of Existence / A. Relations / 1. Nature of Relations

21562

There is no complexity without relations, so no propositions, and no truth [Russell]

9. Objects / A. Existence of Objects / 3. Objects in Thought

9202	Objects, as well as sentences, can have logical form [Fine,K]

9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities

9206	We must distinguish between the identity or essence of an object, and its necessary features [Fine,K]

10. Modality / A. Necessity / 3. Types of Necessity

9205	The three basic types of necessity are metaphysical, natural and normative [Fine,K]

10. Modality / A. Necessity / 5. Metaphysical Necessity

9209	Metaphysical necessity may be 'whatever the circumstance', or 'regardless of circumstances' [Fine,K]

10. Modality / A. Necessity / 11. Denial of Necessity

9200	Empiricists suspect modal notions: either it happens or it doesn't; it is just regularities. [Fine,K]

19. Language / C. Assigning Meanings / 8. Possible Worlds Semantics

9207	If sentence content is all worlds where it is true, all necessary truths have the same content! [Fine,K]