Combining Texts

All the ideas for 'fragments/reports', 'Spreading the Word' and 'Investigations into Logical Deduction'

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

---

3 ideas

1. Philosophy / D. Nature of Philosophy / 3. Philosophy Defined

23367

Even pointing a finger should only be done for a reason [Epictetus]

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]

10. Modality / A. Necessity / 11. Denial of Necessity

19284

Asserting a necessity just expresses our inability to imagine it is false [Blackburn]