Be ready to revise any system, scrap any method, abandon any theory, if the success of the job requires it.

Some people believe they are winners, others believe they are losers. And they are both right.

The fuel of the future is going to come from fruit like that sumach out by the road, or from apples, weeds, sawdust - almost anything.

There is a subtle danger in a man thinking that he is "fixed" for life. It indicates that the next jolt of the wheel of progress is going to fling him off.

If money is your hope for independence you will never have it. The only real security that a man will have in this world is a reserve of knowledge, experience, and ability.

Any man can learn anything he will, but no man can teach except to those who want to learn.

There is no disgrace in honest failure; there is disgrace in fearing to fail