display all the ideas for this combination of texts
3 ideas
13475 | The Fregean concept of GREEN is a function assigning true to green things, and false to the rest [Hart,WD] |
8299 | Abstractions are non-spatial, or dependent, or derived from concepts [Lowe] |
8306 | You can think of a direction without a line, but a direction existing with no lines is inconceivable [Lowe] |