“The above interpretation has been introduced, not on account of its immediate value in the present system, but as an illustration of a significant fact in the philosophy of the intellectual powers, viz., that what has commonly been regarded as the fundamental axiom of metaphysics is but the consequence of a law of thought, mathematical in its form.”

— George Boole

Source: 1850s, An Investigation of the Laws of Thought (1854), p. 50

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George Boole 39

English mathematician, philosopher and logician 1815–1864

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