4 ideas
10494 | Several words may label a category; one word can name several categories; some categories lack words [Ellen] |
18284 | Particulars can be verified or falsified, but general statements can only be falsified (conclusively) [Popper] |
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] |