Much has been said and written about the greatest boxer of all time Muhammed Ali. And now comes the definitive biography of one of the most famous people of the 20th century. Ali: A Life is the title of this unauthorized biography penned by Jonathan Eig. Eig had access to many key people in Ali's life, including his three surviving wives and his managers. Shedding new light on Ali's politics, religion, personal life, and neurological condition, the book is the fruit of more than 500 interviews along with previously unreleased FBI and Justice Department files, as well as hours of newly discovered audiotaped interviews from the 1960s.