Muhammad Ali, (born January 17, 1942, Louisville, Kentucky, U.S.—died June 3, 2016, Scottsdale, Arizona), American professional boxer and social activist. Ali was the first fighter to win the world heavyweight championship on three separate occasions; he successfully defended this title 19 times.
On February 25, 1964, Clay challenged Sonny Liston for the heavyweight championship of the world. Liston was widely regarded as the most intimidating, powerful fighter of his era.
Clay was a decided underdog. But in one of the most stunning upsets in sports history, Liston retired to his corner after six rounds, and Clay became the new champion. Two days later Clay shocked the boxing establishment again by announcing that he had accepted the teachings of the Nation of Islam. On March 6, 1964, he took the name Muhammad Ali, which was given to him by his spiritual mentor, Elijah Muhammad.
Here is the video of his finest saying about hardwork. Quoted by one of his friend. He is legend of boxing.
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