Combining Philosophers

All the ideas for Xenocrates, Hilbert,D/Ackermann,W and Dorion Sagan

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

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3 ideas

1. Philosophy / G. Scientific Philosophy / 3. Scientism

16567

Scientists know everything about nothing, philosophers nothing about everything [Sagan,D]

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]

15. Nature of Minds / A. Nature of Mind / 2. Psuche

5880	Xenocrates held that the soul had no form or substance, but was number [Xenocrates, by Cicero]