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18165 | My Basic Law V is a law of pure logic [Frege] |
Full Idea: I hold that my Basic Law V is a law of pure logic. | |
From: Gottlob Frege (Grundgesetze der Arithmetik 1 (Basic Laws) [1893], p.4), quoted by Penelope Maddy - Naturalism in Mathematics I.1 | |
A reaction: This is, of course, the notorious law which fell foul of Russell's Paradox. It is said to be pure logic, even though it refers to things that are F and things that are G. |