As the world looks back on Muhammad Ali's life, it's reminded of all the things "The Greatest" was known for outside the ring.

And there's one instance in particular few will forget. In 1981, Ali talked a suicidal man off a ledge, calling him his brother.

As CBS reported, the man had reportedly been on the ledge for several hours, shouting that "he was no good" and that the Viet Cong were coming for him.

A police spokesman said at the time: "Ali did it all. … He went up there and he talked to the guy until he came down. A police psychologist and a chaplain had tried — but Ali got it done."

Inside and outside of the ring Ali was larger than life. He was the centerpiece for some of the most memorable matches in boxing history.

But it was outside of fighting where Ali drew criticism for his social activism.

The day after Ali's fight against Sonny Liston, he announced he had converted to Islam. Back then, he was known by his birth name, Cassius Clay.

"Clay was a white man's name, was a slave name, and I'm no longer Clay, no longer [a slave]. I'm now Muhammad Ali," Ali told an NBC reporter.

And while those moves themselves weren't necessarily popular, Ali caused even more of an uproar when he refused to fight in the Vietnam War, declaring himself a conscientious objector.

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Ali was arrested, had his title stripped and was unable to box professionally for three years.

Keep in mind, the Vietnam War was relatively popular when Ali made his stand. In many ways, Ali was vilified and even African-American athletes disagreed with his stance.

Eventually, the U.S. Supreme Court ruled in Ali's favor, took away the threat of jail time and allowed him to box again.

Some, like former Attorney General Eric Holder, have said that court decision was a bigger victory than any of his boxing matches.

But beyond any social justice or fights in the ring, Ali's greatest strength may have been his ability to connect with people — both one-on-one and across the globe.

This video includes clips from CBSESPN, Nationaal Archief / CC BY SA 3.0Library of CongressABCDutch National Archives / CC BY SA 3.0History ChannelNBCFlorida Memory and 대한민국 정부. Music provided courtesy of APM Music.