I have a calling in my soul, if you like, to try to make my life in some way worthwhile. What is the value of my existence?

I think Scotland could take a stand in a wonderful way, ecologically and morally and ethically.

There is a big difference between what I do onstage and what I do in my private life. I don't put my living room on magazine pages.

There's good stuff and bad stuff, but you continue on. I'm not prescriptive - I cannot tell anyone else what to do with their lives, and I'm a deeply flawed individual - but this is it. We're all just living it and... bless us all.

There's always darkness around, and if you focus on the darkness, you don't know where to go. But if you direct yourself at the light - there it is! It's right there.

I wouldn't say that I've mellowed. I'm less mellow, perhaps.

Music is an extraordinary vehicle for expressing emotion - very powerful emotions. That's what draws millions of people towards it. And, um, I found myself always going for these darker places and - people identify with that.