"You want to grow. To compete effectively - - even if you weren't going to grow, just to maintain your position - - you look at who you're competing with. And everyone you're competing with is changing to get better, sometimes dramatically."

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I am also hugely excited to then be competing to defend my three Paralympic titles at the Paralympic Games. I believe we will see some amazing times posted and I am very much looking forward to what will be an incredible Olympics and Paralympics in London.

— Oscar Pistorius