Combining Philosophers

All the ideas for Douglas Lackey, Hilbert,D/Ackermann,W and Xunzi (Xun Kuang)

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5 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]
5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / b. Cantor's paradox
21554 Sets always exceed terms, so all the sets must exceed all the sets [Lackey]
5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / c. Burali-Forti's paradox
21553 It seems that the ordinal number of all the ordinals must be bigger than itself [Lackey]
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / d. Teaching virtue
23405 Rituals escape natural chaos, and benefit everyone, by reshaping our motivations [Xunzi (Xun Kuang), by Norden]
23406 Rituals don't arise from human nature; they are the deliberate creations of a sage [Xunzi (Xun Kuang)]