My goal is to be the undisputed Heavyweight Champion of the World.

The game's been good to me and I hope I've been good to the game. I'm 50 years old and I've pretty much did everything that I wanted to do in boxing.

Fighters find it hard to give up doing what they do best - fighting for a living.

If you don't take no chances, then you're not a performer. Performers always take chances. You go see a singer, they'll hit the high note. They'll hit that note, they're not afraid, they're gonna exaggerate the fact and make me enjoy it, make me say, 'Wow, I wish I could do that!

If you quit every time things don't go your way, then you'll be quitting all through your life.

A setback only paves the way for a comeback.

Either I believe I can be the best heavyweight fighter in the world and beat everyone, or I will not. I feel I can beat everyone as a heavyweight.