5 ideas
14797 | Vagueness is a neglected but important part of mathematical thought [Peirce] |
14798 | All communication is vague, and is outside the principle of non-contradiction [Peirce] |
15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
14528 | Maybe modal thought is unavoidable, as a priori recognition of necessary truth-preservation in reasoning [Hale/Hoffmann,A] |
15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |