To see a thing clearly in the mind makes it begin to take form.

An underpaid man is a customer reduced in purchasing power. He cannot buy. Business depression is caused by weakened purchasing power. Purchasing power is weakened by uncertainty or insufficiency of income. The cure of business depression is through purchasing power, and the source of purchasing power is wages.

Who stops learning may be old.

The man who is too set to change is dead already. The funeral is a mere detail.

Merely gathering knowledge may become the most useless work a man can do. What can you do to help and heal the world? That is the educational test.

I don’t know much about history, and I wouldn’t give a nickel for all the history in the world. It means nothing to me. History is more or less bunk. It's tradition. We don't want tradition. We want to live in the present and the only history that is worth a tinker's damn is the history we make today.

The unhappiest man on earth is the one who has nothing to do.