When I think of invention, I always think of America. You're always seeing ads: 'Have you got the next big idea?' There seems to be that spirit in America of inventions and inventors.

You have to be original. The people creating a buzz on YouTube are taking risks, and they're doing something different. I like it when 15 year-olds come on and tell me what to do rather than the other way around.

If I went to a psychiatrist, it would be a long session. I've always thought that I do have a number of issues that probably need dealing with, because I am quite odd in some ways.

The feelings that we equate with love-feeling sick, feeling insecure, not eating-that's just lust getting in the way. It's your ego saying, 'I want to get laid' and 'I hope she likes me more than I like her.' Love is something that should be there in 20 years' time.

I don't want to tell a 15 or 14 year old what they should be doing. I want them to tell me. And that's what I got when I met Justin Bieber for the first time.

I can't think of one person who is on TV who isn't vain. It's the nature of the beast. If you are on TV then you have a vanity, for sure. Just admit it! Why not?

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