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] |
16861 | A false theory could hardly rival the explanatory power of natural selection [Darwin] |
5959 | Some philosophers say the soul is light [Plutarch] |