"There was never a genius without a..." - Quote by Aristotle
There was never a genius without a tincture of madness.
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More on Genius
“There is that indescribable freshness and unconsciousness about an illiterate person that humbles and mocks the power of the noblest expressive genius.”
“Common sense is as rare as genius.”
“Genius lasts longer than Beauty. That accounts for the fact that we all take such pains to over-educate ourselves.”