One of the most stupid things to do is to pretend you are smart. When you pretend to be smart, you are at the height of stupidity.

Many people start a business only to make money. Just to make money is not a strong enough mission.

If you had seen me back in high school, there's no way you would have ever said I would become an author or teacher because I was a horrible student.

You must fire bad customers just as you would fire a bad employee. If you do not get rid of your bad employees, the good employees will leave. If I do not fire bad customers, not only will my good customers leave but many of my good employees will leave as well.

Texans don't bury their failures. They get inspired by them. They take their failures and turn them into rallying cries. Failure inspires Texans to become winners. But that formula is not just the formula for Texans. It is formula for all winners.

Always remember that no matter what anyone is saying to you from the outside, the most important conversation is the one you are having with yourself on the inside.

Life isn’t fair. It never will be. Quit trying to make it fair. You don’t need it to be fair. Go make life unfair to your advantages.