4 ideas
19440 | How do you know you have conceived a thing deeply enough to assess its possibility? [Vaidya] |
16861 | A false theory could hardly rival the explanatory power of natural selection [Darwin] |
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] |