That's the great thing about art. Anybody can do it if you just believe. With practice, you can make great paintings.

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.

I've been asked to do a retrospective since I was about 28 and I always thought that was a bit odd. It's great to look forward as an artist because in the future the possibilities are infinite; you look back and it's all fixed so it's a scary thing.

For me, art is always a kind of theater. When I started the spot paintings, I made them as an endless series. But I was never serious about it being an endless series. It was just an implied endless series. The theater means you just have to make it look good for that moment in the spotlight.

The great thing about gurus is not that they make you feel everybody's love. It's that they make you feel that you can love everybody.

I think an ashtray is the most fantastically real thing.