"I had a calculus book once that said, 'What one fool can do, another can.' What we've been able to work out about nature may look abstract and threatening to someone who hasn't studied it, but it was fools who did it, and in the next generation, all the fools will understand it."
"Sure people were awed that [Spinoza] had the courage to take on these great questions, but it doesn't do any good to have the courage if you can't get anywhere with the question."
-- From interview "The Smartest Man in the World," in Omni, 1979, included in the collection The Pleasure of Finding Things Out, edited by Jeffrey Robbins, Perseus Books Group, New York, 1999, pp. 194-195.