In his words: Muhammad Ali's most famous quotes

"Float like a butterfly, sting like a bee. Rumble, young man, rumble." - 1964, before his fight with Sonny Liston. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"I'm king of the world! I'm pretty! I'm a bad man! I shook up the world! I shook up the world! I shook up the world!" - February 25, 1964, Ali after defeating Sonny Liston. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"It's hard to be humble when you're as great as I am." - Undated. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"I ain't got no quarrel with them Vietcong." February 17, 1966, Ali's famous explanation of why he refused to serve in the United States Army. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"You serious? I got to stay here and lead my people to the right man - Elijah Muhammad." - when asked why he doesn't flee the country in an interview by Robert Lipsyte of The New York Times on April 26, 1967, two days before refusing induction into military service. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"I've done my celebrating already. I said a prayer to Allah." - June 28, 1971, on being told his conviction for draft evasion was overturned by the US Supreme Court. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"They did what they thought was right, and I did what I thought was right." - on government's long effort to send him to prison. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"I told you all, all of my critics, that I was the greatest of all time. ... Never make me the underdog until I'm about 50 years old." - October 1, 1974, after knocking out George Foreman to become heavyweight champion for the second time, in Kinshasa, Zaire. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"I saw your wife. You're not as dumb as you look." To President Ferdinand Marcos of the Philippines a few days before he beat Joe Frazier in the Thrilla in Manila on October 1, 1975. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"My gloves are going to jail! They ain't done nothin' - yet." - on being told the commission member in charge of the gloves would keep them in a prison until his fight against Joe Bugner on July 1, 1975, at Kuala Lumpur, Malaysia. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"My name is known in Serbia, Pakistan, Morocco. These are countries that don't follow the Kentucky Derby." - New York Times interview, April 1977. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"All I can do is fight for truth and justice. I can't save anybody. He's a science fiction character, and I'm a real character." at a news conference January 31, to announce a comic book in which Ali beats Superman. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"People say I talk so slow today. That's no surprise. I calculated I've taken 29,000 punches. But I earned $57 million and I saved half of it. So I took a few hard knocks. Do you know how many black men are killed every year by guns and knives without a penny to their names? I may talk slow, but my mind is OK." January 20, 1984, while in Seattle for a benefit for Sugar Ray Seales, legally blind because of detached retinas suffered while boxing. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)

"What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. "What I suffered physically was worth what I've accomplished in life. A man who is not courageous enough to take risks will never accomplish anything in life." - at a news conference October 28, 1984, at Houston. (Photo: AP)