People's minds are changed through observation and not through argument.

I would never make a good economist. You know, an economist is a man that can tell you anything about — well, he will tell you what can happen under any given condition — and his guess is liable to be as good as anybody else's, too.

A man only learns by two things; one is reading and the other is association with smarter people.

If the other fellow sells cheaper than you, it is called dumping. 'Course, if you sell cheaper than him, that's mass production.

Americans are getting like a Ford car, they all have the same exact parts, the same upholstering and make exactly the same noises.

Even if you're on the right track, you'll get run over if you just sit there. Opportunity rarely knocks on your door. Knock rather on opportunity's door if you ardently wish to enter.

My own mother died when I was 10 years old. My folks have told me that what little humor I have comes from her. I can't remember her humor, but I can remember her love and understanding of me.