Recently I donated money to the establishment of the Muhammad Ali Foundation in Louisville. I regard that as a kind of payback. He smoothed the way for us. He wasn’t just a great person who had conviction, but made the sport of boxing great. He was the first superstar, he made our stock rise. Without him we wouldn’t have earned so much. Americans from every walk of life have contributed to the foundation: Bill Clinton, Angelina Jolie, Brad Pitt. Unfortunately I was the only American athlete to make a donation. There’s not enough respect in our business.

Whatever I do, I always want to get better.

I don't see where Tyson Fury has boxed anybody of Wladimir's [ Klitschko] calibre to be able to get in the ring with Wladimir and do well.

I've found that taking shortcuts will get you to the place you don't want to be much quicker than they get u to the place u want to be.

I cannot fight everyone at once. I have to take one at a time.

If the media didn't know I played chess, there'd be no angle on me at all.

Boxing isn't just about brute strength; it's about skill and outwitting your opponent.