A smart man isn't necessarily one who knows all the answers, but knows where to find them.

Every serious scientific worker is painfully conscious ... of being relegated to an ever-narrowing sphere of knowledge.

Information is not knowledge.

Knowledge of what is does not open the door directly to what should be.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Education is what remains after one has forgotten what one has learned in school.