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Full Idea
That logic is a priori consists in the fact that we cannot think illogically.
Gist of Idea
Logic is a priori because we cannot think illogically
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 5.4731), quoted by Robin Jeshion - Frege's Notion of Self-Evidence 4
Book Ref
-: 'Mind' [-], p.973
A Reaction
A rather startling claim. Presumably we have to say that when we draw a stupid inference, then we weren't really 'thinking'?
12518 | The mind cannot produce simple ideas [Locke] |
5567 | A priori the understanding can only anticipate possible experiences [Kant] |
16914 | A priori intuition of objects is only possible by containing the form of my sensibility [Kant] |
16909 | Logic is a priori because we cannot think illogically [Wittgenstein] |
12416 | We have some self-knowledge a priori, such as knowledge of our own existence [Kitcher] |
9339 | A priori knowledge (e.g. classical logic) may derive from the innate structure of our minds [Horwich] |
3913 | Maybe imagination is the source of a priori justification [Casullo] |