In boxing, I had a lot of fear. Fear was good. But, for the first time, in the bout with Muhammad Ali, I didn't have any fear. I thought, "This is easy. This is what I've been waiting for". No fear at all. No nervousness. And I lost.

As bad as your situation may be, someone else always has it worse than you.

I'm the world heavyweight champion. I consider myself a citizen of the whole world.

As an entrepreneur, don't follow the crowd; let them follow you.

When problems arise, you will usually find two types of people: whiners and winners. Whiners obstruct progress; they spend hours complaining about this point or that, without offering positive solutions. Winners acknowledge the existence of the problem, but they try to offer practical ideas that can help resolve the matter in a manner that is satisfactory to both parties.

The Rope a Dope would not have existed without the Big Dope.

After you work out, you have your dog with you. There's no better companion. You've got to have a friend. I didn't like opponents who had dogs with them. Because you know they had a little edge. They have a friend