4 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
10855 | Actual infinities are not allowed in mathematics - only limits which may increase without bound [Gauss] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |
8592 | Empty space is measurable in ways in which empty time necessarily is not [Bennett, by Shoemaker] |