Combining Texts

All the ideas for 'Natural Science (lost)', 'Symbolic Logic (with Langford)' and 'Morals and Modals'

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

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4 ideas

7. Existence / A. Nature of Existence / 6. Criterion for Existence

527	Everything exists which anyone perceives [Metrodorus of Chios]

10. Modality / B. Possibility / 8. Conditionals / a. Conditionals

7803	Modal logic began with translation difficulties for 'If...then' [Lewis,CI, by Girle]

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

14629

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

14529

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