4 ideas
8728 | Intuitionist mathematics deduces by introspective construction, and rejects unknown truths [Brouwer] |
12812 | Things have real essences, but we categorise them according to the ideas we receive [Locke] |
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] |