Combining Texts

All the ideas for 'The Sign of Four', 'Elements of Mathematical Logic' and 'Zettel'

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

---

5 ideas

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

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

4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic

8942	Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Lukasiewicz, by Fisher]

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]

14. Science / C. Induction / 1. Induction

22200

If you eliminate the impossible, the truth will remain, even if it is weird [Conan Doyle]