I proved that I can win the Grand Slams. I proved that I can last four and a half hours and come out on top against one of the strongest guys physically that tennis had probably seen especially on this surface. So they would probably be the things that I would say I have learned tonight: To not doubt myself physically and mentally from now on.

Of my investments that have been realised, buying my first house turned out to be a pretty good move, which I didn't really realise at the time.

I used to think that losing made you more hungry and determined but after my success at the Olympics and the U.S. Open I realise that winning is the biggest motivation.

The man who mobilizes the Christian church to pray will make the greatest contribution to world evangelization in history.

When I'm training in December, I have to eat like 6,000 calories a day to maintain my weight. It's a bit tiring.

I fully understand that not all of the companies will succeed and that there will be losses along the way, but this is very much the norm with early stage investment.

You have to go into each match believing you can beat all of the players.