Maurice Greene

When the gun fires you must concentrate for every second on the way to that finish line. You should know exactly how long it will take you to and think about every step of the race you are about to run.

I'm one of those people who is colour blind to a certain degree. And that doesn't mean I'm not acutely aware of race in our country and abroad and in the world. I know what's going on, and I'm very aware of it.

I keep saying I am an auto-didact, but I have a lot of outside influences. One I could cite is juggler Francis Brunn, who was the first man to throw ten rings in the air; he was really an amazing juggler who showed onstage the quest for perfection.