Combining Texts

All the ideas for 'Principles of Theoretical Logic', 'Essays on Intellectual Powers 4: Conception' and 'Reply to Fourth Objections'

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6 ideas

4. Formal Logic / C. Predicate Calculus PC / 1. Predicate Calculus PC

17750

The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki]

9. Objects / D. Essence of Objects / 4. Essence as Definition

23647

Objects have an essential constitution, producing its qualities, which we are too ignorant to define [Reid]

10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / b. Conceivable but impossible

11958

Impossibilites are easily conceived in mathematics and geometry [Reid, by Molnar]

17. Mind and Body / E. Mind as Physical / 6. Conceptual Dualism

3643	The concept of mind excludes body, and vice versa [Descartes]

19. Language / B. Reference / 1. Reference theories

23646

Reference is by name, or a term-plus-circumstance, or ostensively, or by description [Reid]

19. Language / B. Reference / 3. Direct Reference / c. Social reference

23645

A word's meaning is the thing conceived, as fixed by linguistic experts [Reid]