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"Logic is the last scientific ingredient of Philosophy; its extraction leaves behind only a confusion of non-scientific, pseudo problems."
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"But twice-two-makes-four is for all that a most insupportable thing. Twice-two-makes-four is, in my humble opinion, nothing but a piece of impudence. Twice-two-makes-four is a farcical, dressed-up fellow who stands across your path with arms akimbo and spits at you."

"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."

"But all propositions of logic say the same thing. That is, nothing."

"Any belief which encourages you to use your own intellect, which motivates you to question everything and points out your own mind as the only road for your salvation is a good belief!"

"Rationality and common sense never goes out of fashion."

"Logic pervades the world the limits of the world are also the limits of logic."
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