Combining Texts

All the ideas for 'General Facts,Phys Necessity, and Metaph of Time', 'works' and 'Letter on Freedom'

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4 ideas

2. Reason / B. Laws of Thought / 2. Sufficient Reason

5042	For every event it is possible for an omniscient being to give a reason for its occurrence [Leibniz]

3. Truth / B. Truthmakers / 3. Truthmaker Maximalism

17962

The truth-maker principle is that every truth has a sufficient truth-maker [Forrest]

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]

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

11002

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