Combining Texts

All the ideas for 'works', 'Letters to Wolff' and 'works'

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

---

4 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]

9. Objects / D. Essence of Objects / 9. Essence and Properties

13191

The properties of a thing flow from its essence [Leibniz]

10. Modality / A. Necessity / 2. Nature of Necessity

11002

Equating necessity with informal provability is the S4 conception of necessity [Lewis,CI, by Read]

23. Ethics / F. Existentialism / 6. Authentic Self

22230

Sartre gradually realised that freedom is curtailed by the weight of situation [Sartre, by Daigle]