Eig is also working with filmmaker Ken Burns on a four-part documentary on Ali.

The afternoon sun flashes off the cars chrome bumpers.

Cassius Clay gets out.

Cassius Clay

Credit: Stanley Weston/Getty Images

Hes dressed in a custom-made denim jacket and swinging a dandyish walking stick.

He checks to see if anyone has noticed him.

He shouts, Im the biggest thing in history!

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Houghton Mifflin Harcourt

Clay is tall and stunningly handsome, with an irresistible smile.

Hes a force of gravity, quickly pulling people into his orbit.

Cars on Collins Avenue stop.

Women lean out of hotel windows and shout his name.

Float like a butterfly!

Sting like a bee!

Rumble, young man, rumble!

He throws a left jab that stops inches short of the camera.

Im pretty and move as fast as lightning, he says in his sweet Kentucky accent.

Im just twenty-two and Im gonna make a million dollars!

Excerpted from ALI: A Life by Jonathan Eig.

Copyright 2017 by Jonathan Eig.

Used by permission of Houghton Mifflin Harcourt Publishing Company.