4 ideas
9283 | Our ancient beliefs can never be overthrown by subtle arguments [Euripides] |
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] |
12702 | Causes can be inferred from perfect knowledge of their effects [Leibniz] |