Man's mind is his basic tool of survival. Life is given to him, survival is not. His body is given to him, its sustenance is not. His mind is given to him, its content is not. To remain alive, he must act, and before he can act he must know the nature and purpose of his action. He cannot obtain his food without a knowledge of food and of the way to obtain it. He cannot dig a ditch-or build a cyclotron-without a knowledge of his aim and of the means to achieve it. To remain alive, he must think

Ordinary human concern for human distress does not manifest itself ordinarily in the form of a gun aimed at the wallets and earnings of one's neighbors.

To demand 'sense' is the hallmark of nonsense. Nature does not make sense. Nothing makes sense.

Run for your life from any man who tells you that money is evil. That sentence is the leper's bell of an approaching looter.

Every honest man lives for himself. Every man worth calling a man lives for himself. The one who doesn't - doesn't live at all.

A creative man is motivated by the desire to achieve, not by the desire to beat others.

The mark of an honest man... is that he means what he says and knows what he means.