Who said “That is what learning is. You suddenly understand something you've understood all your…”?

“With just enough of learning to misquote.”

“Have you ever seen a pedant with a warm heart?”

“We learn geology the morning after the earthquake.”

“Erudition can produce foliage without bearing fruit.”

“Learning isn't a means to an end; it is an end in itself.”

“Laughter is by definition healthy.”

“Space or science fiction has become a dialect for our time.”

“In university they don't tell you that the greater part of the law is learning to tolerate fools.”

“If a fish is the movement of water embodied, given shape, then cat is a diagram and pattern of subtle air.”

“It is terrible to destroy a person's picture of himself in the interests of truth or some other abstraction.”

“The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.”