I don't know why I run so fast. I just run.

I ran and ran and ran every day, and I acquired this sense of determination, this sense of spirit that I would never, never give up, no matter what else happened.

When I was going through my transition of being famous, I tried to ask God, why was I here? What was my purpose? Surely, it wasn't just to win three gold medals. There has to be more to this life than that.

When the sun is shining I can do anything; no mountain is too high, no trouble too difficult to overcome.

It doesn't matter what you're trying to accomplish. It's all a matter of discipline. I was determined to discover what life held for me beyond the inner-city streets.

I knew that whatever I set my mind to do. I could do.

The potential for greatness lives within us all.