3 ideas
18189 | ZFC could contain a contradiction, and it can never prove its own consistency [MacLane] |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
7350 | The Torah just says: do not do to your neighbour what is hateful to you [Hillel the Elder] |