14 ideas
| 8378 | Philosophers usually learn science from each other, not from science [Russell] |
| 8463 | Maths can be reduced to logic and set theory [Quine] |
| 8461 | The category of objects incorporates the old distinction of substances and their modes [Quine] |
| 8375 | 'Necessary' is a predicate of a propositional function, saying it is true for all values of its argument [Russell] |
| 12732 | Some necessary truths are brute, and others derive from final causes [Leibniz] |
| 19438 | Our large perceptions and appetites are made up tiny unconscious fragments [Leibniz] |
| 8462 | A hallucination can, like an ague, be identified with its host; the ontology is physical, the idiom mental [Quine] |
| 19415 | Passions reside in confused perceptions [Leibniz] |
| 4396 | The law of causality is a source of confusion, and should be dropped from philosophy [Russell] |
| 8376 | If causes are contiguous with events, only the last bit is relevant, or the event's timing is baffling [Russell] |
| 8380 | Striking a match causes its igniting, even if it sometimes doesn't work [Russell] |
| 8379 | In causal laws, 'events' must recur, so they have to be universals, not particulars [Russell] |
| 8381 | The constancy of scientific laws rests on differential equations, not on cause and effect [Russell] |
| 19439 | God produces possibilities, and thus ideas [Leibniz] |