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)

http://books.google.com/books?id=tBNLAAAAYAAJ&pg=P...

Picture Quote 1

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

Picture Quote 2

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

Picture Quote 3

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

Picture Quote 4

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