Combining Texts

All the ideas for 'Letters to Leibniz', 'works' and 'The Epistemology of Essentialist Claims'

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8 ideas

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5
7791 The simplest of the logics based on possible worlds is Lewis's S5 [Lewis,CI, by Girle]
4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
16519 No one can conceive of a possible substance, apart from those which God has created [Arnauld]
9. Objects / D. Essence of Objects / 3. Individual Essences
14637 Only individuals have essences, so numbers (as a higher type based on classes) lack them [McMichael]
9. Objects / D. Essence of Objects / 9. Essence and Properties
14636 Essences are the interesting necessary properties resulting from a thing's own peculiar nature [McMichael]
14640 Maybe essential properties have to be intrinsic, as well as necessary? [McMichael]
9. Objects / D. Essence of Objects / 15. Against Essentialism
14638 Essentialism is false, because it implies the existence of necessary singular propositions [McMichael]
10. Modality / A. Necessity / 2. Nature of Necessity
11002 Equating necessity with informal provability is the S4 conception of necessity [Lewis,CI, by Read]
26. Natural Theory / D. Laws of Nature / 5. Laws from Universals
14639 Individuals enter into laws only through their general qualities and relations [McMichael]