4 ideas
| 18521 | The criterion of existence is the possibility of action [Santayana] |
| 7458 | The reliability of witnesses depends on whether they benefit from their observations [Laplace, by Hacking] |
| 3441 | If a supreme intellect knew all atoms and movements, it could know all of the past and the future [Laplace] |
| 468 | Musical performance can reveal a range of virtues [Damon of Ath.] |