“Each problem that I solved became a rule, which served afterwards to solve other problems.”
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I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.
Rene Descartes 
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Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.
Rene Descartes
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