4 ideas
17962 | The truth-maker principle is that every truth has a sufficient truth-maker [Forrest] |
8886 | Being a true justified belief is not a sufficient condition for knowledge [Gettier] |
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] |