4 ideas
16567 | Scientists know everything about nothing, philosophers nothing about everything [Sagan,D] |
8628 | I hold that algebra and number are developments of logic [Jevons] |
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] |