4 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
12583 | Belief truth-conditions are normal circumstances where the belief is supposed to occur [Papineau] |