I said I was 'The Greatest,' I never said I was the smartest!

America is the greatest country in the world.

To make America the greatest is my goal, so I beat the Russian and I beat the Pole. And for the U.S.A. won the medal of gold. The Greeks said, 'You're better than the Cassius of old.'

I'm the greatest thing that ever lived! I'm the king of the world! I'm a bad man. I'm the prettiest thing that ever lived.

I'm not the greatest; I'm the double greatest. Not only do I knock 'em out, I pick the round.

If I said I would knock out Sonny Liston in 1 minute and 49 seconds of the first round, that would hurt the gate.