Many of the most successful men I have known have never grown up. They have retained bubbling-over boyishness. They have relished wit, they have indulged in humor. They have not allowed ‘dignity’ to depress them into moroseness. Youthfulness of spirit is the twin brother of optimism, and optimism is the stuff of which American business success is fashioned. Resist growing up!

It is well for civilization that human beings constantly strive to gain greater and greater rewards, for it is this urge, this ambition, this aspiration that moves men and women to bestir themselves to rise to higher and higher achievement. Individual success is to be won in most instances by studying and diagnosing the kind of rewards human hearts seek today and are likely to seek tomorrow.

You have no idea how big the other fellow's troubles are.

When it comes to betting on yourself... you're a chicken-livered coward if you hesitate.

The man who is bigger than his job keeps cool. He does not lose his head, he refuses to become rattled, to fly off in a temper. The man who would control others must be able to control himself. There is something admirable, something inspiring, something soul-stirring about a man who displays coolness and courage under extremely trying circumstances. A good temper is not only a business asset. It is the secret of health. The longer you live, the more you will learn that a disordered temper breeds a disordered body.

Our future and our fate lie in our wills more than in our hands, for our hands are but the instruments of our wills.

Diamonds are only lumps of coal that stuck to their jobs.