Lighting that torch in Atlanta didn't make me nervous. Standing up to the government - that made me nervous.

That man was beautiful. Timing, speed, reflexes, rhythm, his body, everything was beautiful. And to me, still, I would say pound for pound... I'd say I'm the greatest heavyweight of all time, but pound for pound, I still say Sugar Ray Robinson was the greatest of all time.

What keeps me going is goals.

When a man says I cannot, he has made a suggestion to himself. He has weakened his power of accomplishing that which otherwise would have been accomplished.

I always bring out the best in men I fight, but Joe Frazier, I'll tell the world right now, brings out the best in me. I'm gonna tell ya, that's one helluva man, and God bless him

Parkinson's is my toughest fight. No, it doesn't hurt. It's hard to explain. I'm being tested to see if I'll keep praying, to see if I'll keep my faith. All great people are tested by God.

Age is whatever you think it is. You are as old as you think you are.