For Ken Burns' new eight-hour documentary series "Muhammad Ali", more than 15,000 archival photographs were collected to shed new light on the legendary athlete: https://cnn.it/3zqzDbl | CNN

For Ken Burns' new eight-hour documentary series "Muhammad Ali", more than 15,000 archival photographs were collected to shed new light on the legendary athlete: https://cnn.it/2VSNwBe Sponsored by Genesis | CNN International

Here are 25 of the greatest quotes from "The Greatest," Muhammad Ali. | SportsCenter