I was the undersized underdog who people never gave a chance. From that, the motivation to prove people wrong just grew and grew... Looking back now, I'm glad I didn't hit puberty until later.

I'm not ashamed to speak my mind. What you see is what you get. You're not going to get a two-faced person who is going to say one thing and mean another.

I've learned I can't change every opinion or have everyone's approval. If I get caught up in that, I'm worried about the wrong things.

You can focus on the few things that give people a negative image about me, or you can see the other things I've done, or talk to people in my inner circle who know more about who I really am.

My greatest moment in my whole career is when I became the first non-Brazilian to win the Brazilian jiu-jitsu world championship. That was my greatest moment.

I'm a fan of everybody, I respect everyone.

Anybody they ever offer me in fighting, I'll probably never be surprised, unless it's the guy's first fight in the UFC.

As life goes on, life just gets harder.

The lion doesn't care that the sheep laugh at him. Remember that. The lion just stays there. The animals make noise and tease. The guy with the belt is the lion.

I want everyone to know that I always gave it the best shot I had, whether it went that way my night.

Fighting is my whole life, the UFC is my whole life.

I'm not just a guy that will walk in the ring and somebody's going to walk across and crush me.

If you decide you're going to be a fighter, you shouldn't have a problem fighting anyone.

I guess being a competitor, you always have that itch. But what it is is... it's tough.

The training camps are tough, going through that.

I do get pumped up about it when I go different places and people are like 'come on! You gotta fight again! You gotta fight again!' But it's a lot of work.

Maybe the word they should use instead of Motivated Penn is Prepared Penn.

I love my life. But I love fighting more.

I got a wonderful life back in Hawaii.

I don't want to be a shell of my former self.

I want to go get that 145-pound belt. That's definitely a huge motivation for me. I believe with Greg Jackson's help, I can get that done.

I'm a purist, and I'm more a fighter than an athlete.

I never even thought I would be in the UFC.

I don't want to be the guy who said 'I could have did this, and I could have did that.' I want to be the guy to know if I could have or I couldn't do it.