If you've got a problem and you multiply it by 50-million people, it becomes unsolvable, but if you've got a problem and you divide it by 50-million people, it becomes solvable.

I love swimming, swimming's my passion and I hope I swim until the last day of my life, so I really, really do enjoy swimming, but swimming for me is simply a way of carrying a message.

Ordinary won't change the world.

Sometimes we set boundaries for ourselves in life, or even worse, we allow others to do so. In many cases, these boundaries are just in our mind and need to be pushed away.

You shouldn't be able to do a swim at the North Pole, it should be frozen over.

I've got two dogs - one's a Jack Russell and she's one year old now, and I've got another dog called Kanga, and I got him from a rescue shelter, and there's nothing I enjoy more than just walking them on the beach in Cape Town. I find that very destressing and very relaxing.

Very few things which are really worth achieving come easily. Sometimes they do, but most of the time you really have to work hard and cleverly.