5 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] |
| 3238 | 'Dead person' isn't a contradiction, so 'person' is somewhat vague [Williams,B] |
| 3239 | You can only really love a person as a token, not as a type [Williams,B] |
| 3441 | If a supreme intellect knew all atoms and movements, it could know all of the past and the future [Laplace] |