I think of stress as the creator of cancer and heart attacks, like a tiny little ball you feed. I believe that one of the reasons I've never got ill is that I'm not stressed.

I honestly can't ever imagine retiring because I don't know what else I would do - even when I'm on holiday, 70% of the time I'm working. I think I'd like to go out on the job so, ideally, 'And the winner is... Ooooh, and he's gone!'

One thing I've learnt is you should never fight it. They're natural emotions and when you try and bottle everything up, that's what can make you depressed. Luckily I have fantastic memories [about my parents] and they really help.

Good is not enough. You've got to be great.

I think America is a hard nut to crack. But once you get a toehold, it's a great place for an entrepreneur because people are so enthusiastic, and you have the most enthusiastic audiences in world.

I want people to understand that from the minute Lady Gaga arrived, she created a new set of rules: being different is good; embrace it.

I do see a big difference in the American work ethic compared to the British work ethic in a lot of artists.