4 ideas
| 291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
| 15716 | If axioms and their implications have no contradictions, they pass my criterion of truth and existence [Hilbert] |
| 18925 | If talking donkeys are possible, something exists which could be a talking donkey [Williamson, by Cameron] |
| 293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |