4 ideas
22519 | Philosophers are revealed by their fears [Billington] |
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] |
3032 | I can form no notion of what the good is [Amphis] |