Even a mistake may turn out to be the one thing necessary to a worthwhile achievement.
When everything seems to be going against you, remember that the airplane takes off against the wind, not with it.
There is joy in work. There is no happiness except in the realization that we have accomplished something.
One of the great discoveries a man makes, one of his great surprises, is to find that he can do what he was afraid he couldn’t do.
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.