17 ideas
1597 | Thales was the first western thinker to believe the arché was intelligible [Roochnik on Thales] |
15970 | People generalise because it is easier to understand, and that is mistaken for deep philosophy [Feynman] |
18755 | Validity is explained as truth in all models, because that relies on the logical terms [McGee] |
18751 | Natural language includes connectives like 'because' which are not truth-functional [McGee] |
18761 | Second-order variables need to range over more than collections of first-order objects [McGee] |
18753 | An ontologically secure semantics for predicate calculus relies on sets [McGee] |
18754 | Logically valid sentences are analytic truths which are just true because of their logical words [McGee] |
18757 | Soundness theorems are uninformative, because they rely on soundness in their proofs [McGee] |
18760 | The culmination of Euclidean geometry was axioms that made all models isomorphic [McGee] |
3013 | Nothing is stronger than necessity, which rules everything [Thales, by Diog. Laertius] |
18762 | A maxim claims that if we are allowed to assert a sentence, that means it must be true [McGee] |
1494 | Thales said water is the first principle, perhaps from observing that food is moist [Thales, by Aristotle] |
9410 | Physical Laws are rhythms and patterns in nature, revealed by analysis [Feynman] |
1713 | Thales must have thought soul causes movement, since he thought magnets have soul [Thales, by Aristotle] |
18530 | Nobody understands quantum mechanics [Feynman] |
17707 | We should regard space as made up of many tiny pieces [Feynman, by Mares] |
1742 | Thales said the gods know our wrong thoughts as well as our evil actions [Thales, by Diog. Laertius] |