6 ideas
8920 | Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz] |
18189 | ZFC could contain a contradiction, and it can never prove its own consistency [MacLane] |
6012 | We must choose in which of the virtues we wish to excel [Panaetius] |
6013 | Panaetius said we should live according to our natural starting-points [Panaetius, by Asmis] |
6014 | Panaetius identified courage with great-mindedness, preferring civic courage to military [Panaetius, by Asmis] |
5888 | Souls are born, since they are sensitive and inherited, so they must perish [Panaetius, by Cicero] |