4 ideas
18948 | There is an object for every set of properties (some of which exist, and others don't) [Parsons,T, by Sawyer] |
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] |
3032 | I can form no notion of what the good is [Amphis] |