8 ideas
| 7557 | To solve Zeno's paradox, reject the axiom that the whole has more terms than the parts [Russell] |
| 10059 | In mathematic we are ignorant of both subject-matter and truth [Russell] |
| 7556 | A collection is infinite if you can remove some terms without diminishing its number [Russell] |
| 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] |
| 7554 | Self-evidence is often a mere will-o'-the-wisp [Russell] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |