5 ideas
| 291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
| 12733 | Because of the definitions of cause, effect and power, cause and effect have the same power [Leibniz] |
| 12734 | Every necessary proposition is demonstrable to someone who understands [Leibniz] |
| 468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
| 293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |