Science is organized knowledge. Wisdom is organized life.

The great tragedy of Science - the slaying of a beautiful hypothesis by an ugly fact.

If scientific reasoning were limited to the logical processes of arithmetic, we should not get very far in our understanding of the physical world. One might as well attempt to grasp the game of poker entirely by the use of the mathematics of probability.

The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.

God runs electromagnetics by wave theory on Monday, Wednesday, and Friday, and the Devil runs them by quantum theory on Tuesday, Thursday, and Saturday.

Ordinarily he was insane, but he had lucid moments when he was merely stupid.

My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

Do not bite at the bait of pleasure till you know there is no hook beneath it.

Half of the American people have never read a newspaper. Half never voted for President. One hopes it is the same half.

Take the diplomacy out of war and the thing would fall flat in a week.