In an artwork you're always looking for artistic decisions, so an ashtray is perfect. An ashtray has got life and death.

I always feel like the art's there and I just see it, so it's not really a lot of work.

I have always been aware that you have to get people listening before you can change their minds. Any artist's big fear is being ignored, so if you get debate, that's great.

But I think it's more that when you're young, you're invincible, you're immortal - or at least you think you are. The possibilities are limitless, you're inventing the future. Then you get older and suddenly you have a history. It's fixed. You can't change anything. I find that a bit disturbing, to be honest.

In an artwork you're always looking for artistic decisions, so an ashtray is perfect. An ashtray has got life and death.