Definition.com
Muhammad Ali is the astronaut of boxing. Joe Louis and Dempsey were just jet pilots. Ali is in a world of his own.
Trivia.com
In 1990, Muhammad Ali saved the lives of 15 U.S. hostages in Iraq by going there and negotiating with Saddam Hussein by himself, ignoring warnings from the government and his family.
Trivia.com
Muhammad Ali refused to fight in the Vietnam War stating "I ain't got no quarrel with those Vietcong, they never called me n****r.".
Trivia.com
Muhammad Ali's star on the Walk of Fame is on the wall, not on the pavement, because he didn't want the name of Muhammad to be stepped on.