Combining Philosophers

All the ideas for Xenophon, David M. Rosenthal and Hilbert,D/Ackermann,W

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

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4 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]

16. Persons / C. Self-Awareness / 1. Introspection

5692	Introspection is not perception, because there are no extra qualities apart from the mental events themselves [Rosenthal]

22. Metaethics / B. Value / 2. Values / h. Fine deeds

5845	Niceratus learnt the whole of Homer by heart, as a guide to goodness [Xenophon]

25. Social Practice / E. Policies / 5. Education / b. Education principles

5833	Education is the greatest of human goods [Xenophon]