The boxing legend and civil rights activist was once featured in Apple’s iconic “Think Different” ads.
“The man who has no imagination has no wings,” reads the quote Apple has placed alongside Ali’s photo. Tim Cook used another in a tweet posted the day after Ali’s death.

"He who is not courageous enough to take risks will accomplish nothing in life." Rest in peace #MuhammadAli
— Tim Cook (@tim_cook) June 4, 2016

Ali is deeply respected not just because he’s one of the greatest boxers the world has ever seen, but also because of the part he played in the Civil Rights Movement during the 1960s, giving speeches at colleges and universities throughout America.