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"Plurality should not be posited without necessity."
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"A thousand minus one is never a thousand."

"In order to disprove the assertion that all crows are black, one white crow is sufficient."

"I was upset. I had always believed logic was a universal weapon and now I realized how its validity depended on the way it was employed."

"A narrow hallway is all that separates rational from irrational, creativity from insanity, and intelligence from stupidity."

"Many people have said to me that I'm a mystic. I find that a bit mysterious. I just use logic and common sense for my philosophies."

"Logic, n. The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding. The basic of logic is the syllogism, consisting of a major and a minor premise and a conclusion - thus:Major Premise: Sixty men can do a piece of work sixty times as quickly as one man.Minor Premise: One man can dig a post-hole in sixty seconds; Therefore-Conclusion: Sixty men can dig a post-hole in one second.This may be called syllogism arithmetical, in which, by combining logic and mathematics, we obtain a double certainty and are twice blessed."
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