5 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
12697 | Indivisibles are not parts, but the extrema of parts [Leibniz] |
13165 | Geometrical proofs do not show causes, as when we prove a triangle contains two right angles [Proclus] |
9569 | The origin of geometry started in sensation, then moved to calculation, and then to reason [Proclus] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |