“Science is not a matter of belief. Science does not care whether you believe in it or not. Science will continue to do what science will do, free from morality, free from ethical concerns, and most of all, free from the petty worry that it will not be believed. Belief has shaped the history of human accomplishment—we believe we can, and so we do—but belief has never changed the natural world. The mountain does not vanish because we believe it should. The unicorn does not appear because we believe it will.”