4 ideas
6408 | Russell needed three extra axioms to reduce maths to logic: infinity, choice and reducibility [Grayling] |
6414 | Two propositions might seem self-evident, but contradict one another [Grayling] |
5845 | Niceratus learnt the whole of Homer by heart, as a guide to goodness [Xenophon] |
7294 | No crime and no punishment without a law [Roman law] |