3 ideas
14248 | We could accept the integers as primitive, then use sets to construct the rest [Cohen] |
12887 | A whole must have one characteristic, an internal relation, and a structure [Rescher/Oppenheim] |
1799 | If we can't know minds, we can't know if Pyrrho was a sceptic [Theodosius, by Diog. Laertius] |