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"The first precept was never to accept a thing as true until I knew it as such without a single doubt."
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"Defined in psychological terms, a fanatic is a man who consciously over-compensates a secret doubt."

"In the middle of the storm, the 'a' of the atheist drops!"

"It's a technical, fairly difficult job that has no particular political connotations, so I doubt there are any big campaign contributors dying to be on the Fed. And remember, it doesn't pay very well, certainly by Republican standards."

"Sometimes I feel certain that the hyenas are laughing at us."

"A fanatic is a man who consciously over compensates a secret doubt."
Explore more quotes by Rene Descartes

"It is only prudent never to place complete confidence in that by which we have even once been deceived."

"The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge."

"An optimist may see a light where there is none, but why must the pessimist always run to blow it out?"

"The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once."

"There is nothing so strange and so unbelievable that it has not been said by one philosopher or another."

"Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has."
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