4 ideas
6457 | Sensations are mental, but sense-data could be mind-independent [Vesey] |
17613 | We should judge principles by the science, not science by some fixed principles [Zermelo] |
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] |