I felt so relaxed. It just felt very easy, and that's why it surprised me that I had broken my world record.

It's a great feat for me to have broken my world record.

You don't want people thinking you're a cheat just because you're really fast and have broken the world record by a second.

If anybody wants to beat me, let them run a world record.

No world championship has been easy for me.

The world record will come to me when I run the world record race. I'm just trying to perfect my race. I'm looking for perfection.