4 ideas
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] |
13166 | Essences are no use in mathematics, if all mathematical truths are necessary [Mancosu] |
7101 | Virtue theory needs an external standard to judge behaviour and character [Inwagen, by Statman] |