4 ideas
2713 | Are sense-data independent, with identity, substance and location? [Tye] |
7296 | 'Grue' is not a colour [Milsted] |
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] |