7 ideas
14779 | I reason in order to avoid disappointment and surprise [Peirce] |
14777 | That a judgement is true and that we judge it true are quite different things [Peirce] |
9565 | Zermelo made 'set' and 'member' undefined axioms [Zermelo, by Chihara] |
3339 | For Zermelo's set theory the empty set is zero and the successor of each number is its unit set [Zermelo, by Blackburn] |
14780 | Only study logic if you think your own reasoning is deficient [Peirce] |
14778 | Facts are hard unmoved things, unaffected by what people may think of them [Peirce] |
3448 | Do new ideas increase the weight of the brain? [Dance] |