Combining Texts

All the ideas for 'fragments/reports', 'On the General Idea of Proof Theory' and 'works'

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

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6 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13827

Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

13826

Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz]

7. Existence / A. Nature of Existence / 3. Being / d. Non-being

18933

Not-Being obviously doesn't exist, and the five modes of Being are all impossible [Gorgias, by Diog. Laertius]

19. Language / F. Communication / 1. Rhetoric

5864	Destroy seriousness with laughter, and laughter with seriousness [Gorgias]

9866	Gorgias says rhetoric is the best of arts, because it enslaves without using force [Gorgias, by Plato]

21. Aesthetics / B. Nature of Art / 4. Art as Expression

8120	Objects can be beautiful which express nothing at all, such as the rainbow [Herbart, by Tolstoy]