3 ideas
9220 | Lewis must specify that all possibilities are in his worlds, making the whole thing circular [Shalkowski, by Sider] |
9145 | We form the image of a cardinal number by a double abstraction, from the elements and from their order [Cantor] |
8113 | Art is like understanding a natural language, and needs a grasp of a symbol system [Goodman, by Gardner] |