4 ideas
13082 | The complete concept of an individual includes contingent properties, as well as necessary ones [Leibniz] |
19000 | Read 'all ravens are black' as about ravens, not as about an implication [Belnap] |
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] |