4 ideas
6408 | Russell needed three extra axioms to reduce maths to logic: infinity, choice and reducibility [Grayling] |
16695 | Successive entities are in flux, flowing in existence, with different parts at different times [Oresme] |
6414 | Two propositions might seem self-evident, but contradict one another [Grayling] |
651 | Eurytus showed that numbers underlie things by making pictures of creatures out of pebbles [Eurytus, by Aristotle] |