Adversity is something that makes reaching your goals so much more rewarding than if it didn't exist.

I don't have anything else to prove.

I wanted to prove I was the best fighter in the world.

I am definitely not scared of Mike Tyson. I am at the top of the food chain and he is looking to knock me off. Mike's an arrogant imbecile. He sounds like a cartoon character.

At first I didn’t give a damn to go down in history. I wanted to win. But the more I won, the more I thought about leaving something behind. Yes, it's as important as hell to me. I want to leave something that people will remember me by. Of course, a lot of boxers want to do that. But it's not easy. Take Larry Holmes, he was the big man after Muhammad Ali, he wanted to emulate him, but for some reason the public didn’t take him like they did to Ali. I think people won’t fully understand what I contributed to the sport for years.

Whatever I do, I always want to get better.

After about 25 fights you don't always have to keep going to the bathroom before the fight.