Combining Texts

All the ideas for 'works', 'Of liberty, Fate and God's grace' and 'Principles of Theoretical Logic'

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

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3 ideas

1. Philosophy / A. Wisdom / 2. Wise People

15833

Tell cleverness from answers, but wisdom from questions [Mahfouz]

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 / 7. Essence and Necessity / b. Essence not necessities

13082

The complete concept of an individual includes contingent properties, as well as necessary ones [Leibniz]