6 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
21558 | 'Predicative' norms are those which define a class [Russell] |
21559 | We need rules for deciding which norms are predicative (unless none of them are) [Russell] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |