Combining Texts

All the ideas for 'Confessions of a Philosopher', 'Zettel' and 'Investigations into Logical Deduction'

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5 ideas

1. Philosophy / D. Nature of Philosophy / 1. Philosophy

2626	A philosopher is outside any community of ideas [Wittgenstein]

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13832

Natural deduction shows the heart of reasoning (and sequent calculus is just a tool) [Gentzen, by Hacking]

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox

6569	'This sentence is false' sends us in a looping search for its proposition [Wittgenstein, by Fogelin]

13. Knowledge Criteria / C. External Justification / 2. Causal Justification

3790	Causes of beliefs are irrelevant to their contents [Wittgenstein]

16. Persons / C. Self-Awareness / 3. Limits of Introspection

3102	Why don't we experience or remember going to sleep at night? [Magee]