George Boole Quote

That axiom of Metaphysicians which is termed the principle of contradiction and which affirms that it is impossible for anything to possess a quality, and in the same time not to possess it, is a consequence of the fundamental law of thought, whose expression is x²=x.


p. 49: as cited in: "Professor Boole's Mathematical theory" in: Henry Longueville Manse, Philosophical pamphlets, (1853), p. 6 - An Investigation of the Laws of Thought (1854)

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That axiom of Metaphysicians which is termed the principle of contradiction and which affirms that it is impossible for anything to possess a...

That axiom of Metaphysicians which is termed the principle of contradiction and which affirms that it is impossible for anything to possess a...

That axiom of Metaphysicians which is termed the principle of contradiction and which affirms that it is impossible for anything to possess a...

That axiom of Metaphysicians which is termed the principle of contradiction and which affirms that it is impossible for anything to possess a...