4 ideas
23367 | Even pointing a finger should only be done for a reason [Epictetus] |
14248 | We could accept the integers as primitive, then use sets to construct the rest [Cohen] |
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] |