4 ideas
22881 | Should we value environmental systems for human benefit, or for their own sake? [Hildebrand] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
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] |