Combining Texts

All the ideas for 'thirty titles (lost)', 'Life of Pythagoras' and 'works'

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5 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 / B. Unity of Objects / 2. Substance / c. Types of substance

594	Speusippus suggested underlying principles for every substance, and ended with a huge list [Speussipus, by Aristotle]

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

11002

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

28. God / A. Divine Nature / 6. Divine Morality / b. Euthyphro question

1515	Pythagoreans believe it is absurd to seek for goodness anywhere except with the gods [Iamblichus]

28. God / C. Attitudes to God / 5. Atheism

2632	Speusippus said things were governed by some animal force rather than the gods [Speussipus, by Cicero]