4 ideas
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
15313 | By 'force' I mean the sources of all actions - sometimes called 'powers' by their outcomes [Breheny] |
13605 | Gravity isn't a force, because it produces effects without diminishing [Mayer] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |