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

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

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.

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.

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.

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.