6 ideas
18261 | A simplification which is complete constitutes a definition [Kant] |
22275 | Logic gives us the necessary rules which show us how we ought to think [Kant] |
10180 | Mathematicians do not study objects, but relations between objects [Poincaré] |
18260 | If we knew what we know, we would be astonished [Kant] |
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] |