4 ideas
16567 | Scientists know everything about nothing, philosophers nothing about everything [Sagan,D] |
19405 | Substances are in harmony, because they each express the one reality in themselves [Leibniz] |
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] |