To be a great champion you must believe you are the best. If you’re not, pretend you are.

I'm the greatest, I'm a bad man, and I'm pretty!

You can't keep your mind on fighting when you're thinking about a woman. You can't keep your concentration. You feel like sleeping all the time.

It's hard to be humble, when you're as great as I am.

I ain't got no quarrel with them Viet Cong.

I am the astronaut of boxing. Joe Louis and Dempsey were just jet pilots. I'm in a world of my own.

I'm The Greatest, but only in relation to fighting.