"I have not been able to discover that anyone knows enough to say what is and what is not possible."

"The only real security that a man can have in this world is a reserve of knowledge, experience, and ability."

"I believe that the average man wants to work."

"The competitor to be feared is one who never bothers about you at all, but goes on making his own business better all the time."

"My success, I attribute to this one rule: I have never given or taken an excuse."