The secret of success is constancy to purpose.

Dad, you've done a lot of great things, but you're a very old man, and old people are useless.

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

The production of too many useful things results in too many useless people.

If we all did the things we are really capable of doing, we would literally astound ourselves

Deadlines just aren't real to me until I'm staring one in the face.

You gain strength, courage and confidence by every experience in which you really stop to look fear in the face.... You must do the thing you think you cannot do.

Speak softly and carry a big stick; you will go far.

Your most unhappy customers are your greatest source of learning.

Ability may get you to the top, but it takes character to keep you there.

You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself. That is something you have charge of.

If you think your teacher is tough, wait until you get a boss. He doesn't have tenure.

It is the set of the sails, not the direction of the wind that determines which way we will go.

Action is the foundational key to all success.

Success is doing ordinary things extraordinarily well.

The successful leader must be willing to assume responsibility for the mistakes and the shortcomings of his followers.

Don't gamble; take all your savings and buy some good stock and hold it till it goes up, then sell it. If it don't go up, don't buy it.

Talent hits a target no one else can hit; Genius hits a target no one else can see.

I've always thought anyone can make money. Making a life worth living, that's the real test.

Success comes to those who become success conscious. Failure comes to those who indifferently allow themselves to become failure conscious.

If you do not change direction, you may end up where you are heading.