Even a mistake may turn out to be the one thing necessary to a worthwhile achievement.
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.
Exercise is bunk. If you are healthy, you don't need it, if you are sick you should not take it.
There is joy in work. There is no happiness except in the realization that we have accomplished something.