Success is a matter of adjusting one's efforts to obstacles and one's abilities to a service needed by others.
Those who never make mistakes work for those of us who do.
Whether you think you will succeed or not, you are right.
Every man is entitled to make a darn fool of himself at least once in a lifetime.
History is more or less bunk.
The way to learn to do things is to do things. The way to learn a trade is to work at it. Success teaches how to succeed. Begin with the determination to succeed, and the work is half done already.