5 ideas
15312 | We get the idea of power by abstracting from ropes, magnets and electric shocks [Priestley] |
9145 | We form the image of a cardinal number by a double abstraction, from the elements and from their order [Cantor] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
15311 | Attraction or repulsion are not imparted to matter, but actually constitute it [Priestley] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |