"By the way, I never realized that to be nonbelieving, to be an atheist, was a thing to be proud of. It went without saying as it were."

"Quantum mechanics is a wonderful theory. But it is not the last word."

"The scientific method is a powerful tool, but it is not the only way to gain knowledge."

"The world is a puzzle, and we are here to solve it."

"The number of children born to a marriage ought to be limited, and that a man who has already had some children should be sterilized."