Combining Philosophers

All the ideas for Hilbert,D/Ackermann,W, Leucippus and Brand Blanshard

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4 ideas

2. Reason / A. Nature of Reason / 6. Coherence

2764	Full coherence might involve consistency and mutual entailment of all propositions [Blanshard, by Dancy,J]

3. Truth / D. Coherence Truth / 1. Coherence Truth

19080

Coherence tests for truth without implying correspondence, so truth is not correspondence [Blanshard, by Young,JO]

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]

10. Modality / A. Necessity / 8. Transcendental Necessity

490	Everything happens by reason and necessity [Leucippus]