3 ideas
17699 | Variables are auxiliary notions, and not part of the 'eternal' essence of logic [Schönfinkel] |
8638 | Thomae's idea of abstract from peculiarities gives a general concept, and leaves the peculiarities [Frege on Thomae] |
8120 | Objects can be beautiful which express nothing at all, such as the rainbow [Herbart, by Tolstoy] |