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 don't mind competition at all. I mean, the record business is the most competitive business in the world, probably. So I'm used to that. In a weird way, it kind of makes you work harder.

I'd say the most dangerous thing I've ever done is probably bungee jumping in Thailand...

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

We felt the time was right to open up the boundaries, and say to all of America, regardless of your age, whether you're 2, whether you're 100, regardless of what you believe your talent is - juggling, magic, singing - this is the show you can enter. It's as simple as that.

We have hated the French for years. Now you have just joined the club. It makes you much more likable.

There's an expression in life: "You can only make one first impression." And that first impression has to be spectacular. So, I wait, and let people see it when it's ready to go. It's not a set rule, but I think it's the better way of working. People will agree with you because of your track record, but you want people to like it because it's good, not because you found it.