4 ideas
15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |
3448 | Do new ideas increase the weight of the brain? [Dance] |
2594 | A true cause must involve a necessary connection between cause and effect [Malebranche] |