The term GOAT -- Greatest of All Time -- was coined for boxing champion Muhammad Ali. Born Cassius Clay, he took the name Muhammad Ali when he converted to Islam. But most often he was known simply as Ali or "The Greatest." We mourn his death at age 74 from Parkinson's disease. Ali was selected by Sports Illustrated as the third greatest athlete of the 20th century. But he was also a towering and sometimes polarizing figure in American culture as well, a consummate showman, and a proud,...