Combining Texts

All the ideas for 'The Sign of Four', 'Letters to Fardella' and 'Difficulties of Transfinite Numbers and Types'

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

---

4 ideas

6. Mathematics / C. Sources of Mathematics / 10. Constructivism / d. Predicativism

21558

'Predicative' norms are those which define a class [Russell]

21559

We need rules for deciding which norms are predicative (unless none of them are) [Russell]

8. Modes of Existence / C. Powers and Dispositions / 2. Powers as Basic

12708

The soul is not a substance but a substantial form, the first active faculty [Leibniz]

14. Science / C. Induction / 1. Induction

22200

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