5 ideas
18261 | A simplification which is complete constitutes a definition [Kant] |
15380 | Barcan:nothing comes into existence; Converse:nothing goes out; Both:domain is unchanging [Vervloesem] |
22275 | Logic gives us the necessary rules which show us how we ought to think [Kant] |
18260 | If we knew what we know, we would be astonished [Kant] |
8113 | Art is like understanding a natural language, and needs a grasp of a symbol system [Goodman, by Gardner] |