4 ideas
17962 | The truth-maker principle is that every truth has a sufficient truth-maker [Forrest] |
16587 | Prime matter is halfway between non-existence and existence [Averroes] |
15432 | Structural universals might serve as possible worlds [Forrest, by Lewis] |
22352 | Out of more than a hundred planets, Earth is the only one with the idea of free will [Vonnegut] |