4 ideas
12191 | Counterfactuals are true if logical or natural laws imply the consequence [Goodman, by McFetridge] |
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] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |