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Much has been written about Einstein, but Pedro Ferreira in The Perfect Theory: A Century of Geniuses and the Battle over General Relativity
My conversation with Pedro Ferreira:
"To discover to the world something which deeply concerns it, and of which it was previously ignorant; to prove to it that it had been mistaken on some vital point of temporal or spiritual interest, is as important a service as a human being can render to his fellow creatures..." John Stuart Mill, "On Liberty"