5 ideas
| 6215 | 'Contingent' means that the cause is unperceived, not that there is no cause [Hobbes] |
| 7441 | Experiences are defined by their causal role, and causal roles belong to physical states [Lewis] |
| 7442 | 'Pain' contingently names the state that occupies the causal role of pain [Lewis] |
| 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] |