If I go to the National Gallery and I look at one of the great paintings that excite me there, it's not so much the painting that excites me as that the painting unlocks all kinds of valves of sensation within me which return me to life more violently.
Almost all the other fellows do not look from the facts to the theory but from the theory to the facts; they cannot get out of the network of already accepted concepts; instead, comically, they only wriggle about inside.
Science ... looks skeptically at all claims to knowledge, old and new. It teaches not blind obedience to those in authority but to vigorous debate, and in many respects that's the secret of its success.