4 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
8978 | Events are made of other things, and are not fundamental to ontology [Bennett] |
22352 | Out of more than a hundred planets, Earth is the only one with the idea of free will [Vonnegut] |
10364 | Facts are about the world, not in it, so they can't cause anything [Bennett] |