4 ideas
14799 | Metaphysics rests on observations, but ones so common we hardly notice them [Peirce] |
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
16745 | No one even knows the nature and properties of a fly - why it has that colour, or so many feet [Bacon,R] |