We need to be creative, on the cutting edge, challenged, and it's really hard going. It's relentless, and we're relentless, and we have a history of breaking engineers, producers. I mean, people come out of working with U2 and just go, 'I just don't know what's happened; it feels like a lifetime has passed by.' And that's just the way we work.

Relevance, for me, is about being creative and doing things that you believe in, whether that's music or acting or painting a picture, or whatever that is.

In the music world, ageism is a big issue. It's about youth and youth culture. There's no other art form that I know that requires you to be a certain age.

The big issue with rock stars becoming actors is that sometimes it's not believable, and vice versa with actors becoming rock stars. Sometimes just doesn't fit.

I'm not a violent person, but I've got a hard core streak and have a reputation about living dangerously.

I was in Cannes two years ago at our 'U23D' movie premiere. I love the French.

I have had an amazing career for a man who hits things for a living.

Companies like Spotify, the new Apple service, and all the others are really going to have to pay artists more. And I think it's a matter of time; I think a lot of these companies and the individuals that are involved in them realize that as well. They know that artists are not getting what they should be getting.

I've always had an interest in doing something that was outside my comfort zone; I had this thing about standing on the edge of the cliff and deciding to jump.

I don't know what I'm qualified to do, film-wise... So it's really down to a director or a casting director to find something that they think I could do.