Muhammad Ali

If my mind can conceive it, and my heart can believe it, then I can achieve it.

It isn't the mountains ahead to climb that wear you out; it's the pebble in your shoe.

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

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

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

It's not the size of the dog in the fight, it's the size of the fight in the dog.

Float like a butterfly, sting like a bee.

I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.'

Service to others is the rent you pay for your room here on earth.

I don’t count the days; I make the days count.