4 ideas
15432 | Structural universals might serve as possible worlds [Forrest, by Lewis] |
9155 | An a priori proof is independent of experience [Leibniz] |
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] |