3 ideas
15549 | If it were true that nothing at all existed, would that have a truthmaker? [Lewis] |
18946 | Unreflectively, we all assume there are nonexistents, and we can refer to them [Reimer] |
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |