Without struggle, there is no progress. There has to be struggle in your life. You have to grow in experience to control your ego. Cause, you know, an ego can be crushed, it can be killed, it can be smashed, but it comes back. It never dies. That's the thing about the ego: it never dies.

Everybody you fight is not your enemy and everybody who helps you is not your friend.

No one who isn't an extremist can understand the mind of an extremist.

My objective is to destroy anybody over 200 pounds, in the ring or out.

For what I get paid to get into the ring, I owe it to my fans to uphold the institution of sportsmanship.

It's just good that Detroit is coming back. I'm so happy it's coming back because it needs to come back. When I do my trips around the world, and I can be anywhere, but I always see somebody from Detroit or Chicago. Those guys are world travelers.

Emotion is more than just anger. When I am performing, I need emotion, but I need control, too. Emotion drives the best performance and is necessary, but it must be controlled. I believe Fedor [Emelianenko] does that. I do too. We may look different in how we do it, but we both do it.