Never follow the crowd.

Information cannot serve as an effective substitute for thinking.

Age is only a number, a cipher for the records. A man can't retire his experience. He must use it. Experience achieves more with less energy and time.

There are no such things as incurables. There are only things for which man has not found a cure.

Whatever failures I have known, whatever errors I have committed, whatever follies I have witnessed in private and public life have been the consequence of action without thought.

I get the facts, I study them patiently, I apply imagination.

It is far more difficult... to know when to sell a stock than when to buy.