Amateurism is the strongest form of discrimination in sports. Because it discriminates against the underprivileged, it discriminates against the poor. If we want sports to go back to the wealthy, let's make it amateur again.

'm so fortunate to have done what I love to do for so long, but the day I retired was one of the best days of my life. Not because I was happy to get away from the sport, but because it was clear in my mind that I had done all I possibly could, and that it was time to go.

My thoughts before a big race are usually pretty simple. I tell myself: Get out of the blocks, run your race, stay relaxed. If you run your race, you'll win... channel your energy. Focus.

Channel your energy. Focus.

Life is about timing.