We all have views on what our Irishness means to us. Two members of the band were born in England and were raised in the Protestant faith. Bono's mother was Protestant and his father was Catholic. I was brought up Catholic. U2 are a living example of the kind of unity of faith and tradition that is possible in Northern Ireland.

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.

It's a tough life being a pop star. You know, at the end of the day when you've paid all the bills and put the kids through college and that, you know, there's only enough left for a small island off the South Pacific.

I don't think anybody could imagine the life that I've been lucky enough to have. It's been an incredible journey.

Relevance is a big, big question. It's more about what's your definition of being relevant. In the music world, agism 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.

I love the Elvis movies. I used to watch them. In every single one of his movies he wasn't acting as a car salesman - he was acting as a car salesman who loved to play guitar.

If Bono left, we could carry on. If I left, we'd be screwed.