When it comes to the British monarchy, I prefer to be seduced by an image than presented with a real person. It's kind of a Warhol thing.

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

Painting is so poetic, while sculpture is more logical and scientific and makes you worry about gravity.

I was brought up Catholic, and I felt the power of art from a very young age - seeing the brutality of all those images of flayed apostles and tortured saints was a pretty strong introduction.

But the answer to how to live is to stop thinking about it. And just to live. But you're doing that anyway. However you intellectualise it, you still just live.

You've got to be oblivious to other people, the push and pull of other people's opinions, the way other people measure success. It's then that you realize you are 100 percent who you are and you have to use that who-you-are 100 percent in order to create great things.

Great art - or good art - is when you look at it, experience it and it stays in your mind. I don't think conceptual art and traditional art are all that different.