You’'ve got to understand that everything has its time. I had wonderful years as a boxer, I achieved everything. I don’t miss anything.

A boxer should quit at the top, as they say. But that’s complicated. There are plenty of people in boxing who make money out off you. And they tell you that you’ve still got it, that it’s still getting better.

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

When I saw Tyson knocking everybody out on TV, I thought, He's goooood. But when I saw him in person, he didn't look as awesome.

It's not rage that drives me, it's competition.

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.

People know I was the last true champion.