Combining Texts

All the ideas for 'Purifications (frags)', 'The Foundations of Mathematics' and 'Morals and Modals'

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3 ideas

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

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You would cripple mathematics if you denied Excluded Middle [Hilbert]

10. Modality / C. Sources of Modality / 1. Sources of Necessity

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If we are told the source of necessity, this seems to be a regress if the source is not already necessary [Blackburn]

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If something underlies a necessity, is that underlying thing necessary or contingent? [Blackburn, by Hale/Hoffmann,A]