"The way to success is to get up early, work late, and strike oil."

"I believe that the best way to learn is to teach."

"It marks a big step in a man's development when he comes to realize that other men can help him do a better job than he could do alone."

"The man who knows how to make money is a man who knows how to make himself useful to others."

"I am not a hero; I am a mere manufacturer."