I tend not to argue about things that I don't believe in.

It's difficult to relax on tournaments, even in posh hotels, because you don't know how long you will be there - whether you'll lose a match on the first day and leave or whether you'll stay for longer.

I am not stroppy at all.

I'm a global ambassador for the World Wildlife Fund and United for Wildlife and I am also a Unicef UK ambassador. It's important to me to support charities. I never want to take my wealth for granted.

Learn to worship God as the God who does wonders, who wishes to prove in you that He can do something supernatural and divine.

As a child I was a good boy. Even if I wasn't playing tennis I don't think I'd have done things like smoking or getting drunk. I'm lucky I never liked the taste of alcohol - I know, I'm Scottish so what's wrong with me? - but I never even liked the smell of the stuff. It's the same with smoking, it never appealed to me. I guess I missed out on my Kevin-The-Teenager phase.

It becomes tricky, and you start to think about the cramps rather than just actually what you're trying to do on the court, which is obviously win the match.