4 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
17831 | Cantor gives informal versions of ZF axioms as ways of getting from one set to another [Cantor, by Lake] |
13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |