Muhammad Ali, “The Greatest” boxer in history, died on Friday at the age of 74. The former world heavyweight boxing champion died at a hospital near Phoenix, Arizona, according to his family. He had trouble with breathing and was admitted to the hospital earlier in the week. For over 30 years, Ali was ill with Parkinson’s disease. Doctors said it was likely caused by the punches Ali took during his career as a boxer. Ali was born in Louisville, Kentucky on January 17, 1942. He was given the name Cassius Clay. He learned to box at 12 after someone stole his new bicycle. Six years later, Clay won the light heavyweight Olympic gold medal, in 1960. In 1964, Clay said that he would “float like a butterfly, sting like a bee” to fight world heavyweight champion Sonny Liston. Before the fight, Clay told reporters that “I am the greatest.”