4 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
10190 | From the axiomatic point of view, mathematics is a storehouse of abstract structures [Bourbaki] |
19000 | Read 'all ravens are black' as about ravens, not as about an implication [Belnap] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |