Muhammad Ali

Float like a butterfly, sting like a bee.

It's not bragging if you can back it up.

I am the greatest. I said that even before I knew I was.

Don't count the days. Make the days count.

Impossible is just a word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it.

He who is not courageous enough to take risks will accomplish nothing in life.

The man who has no imagination has no wings.