3 ideas
18758 | Validity is provable, but invalidity isn't, because the model is infinite [Church, by McGee] |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
16707 | Cold and hot are the swiftness and slowness of corpuscular motion [Beeckman] |