You can consider me like fine wine. I just get better with age.

I've worked hard and accomplished what I've accomplished in the heavyweight scene.

The mission I set out on in the beginning - to become heavyweight champion of the world, undisputed, lineal champion - you could say that mission is complete.

As a boxer I took the liberty of using not only my fists, but also my head.

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.

[Wladimir] Klitschko has got the experience, so if Tyson [Fury] waits on him, Klitschko will out-box him. But if he uses his speed and reach it will be a great chance for him to win.

The danger of a closed mind is that it can also leave good things like love, compassion and reason on its outside.