4 ideas
3299 | In logic identity involves reflexivity (x=x), symmetry (if x=y, then y=x) and transitivity (if x=y and y=z, then x=z) [Baillie] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
4800 | Natural laws result from eliminative induction, where enumerative induction gives generalisations [Cohen,LJ, by Psillos] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |