4 ideas
13737 | The empiricist says that metaphysics is meaningless, rather than false [Schlick] |
13083 | The essence is the necessary properties, and the concept includes what is contingent [Leibniz] |
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] |