The reason why I'm popular as an artist in this country is because it suits the psyche of the nation at this time. Ten years ago, my work wouldn't have had any currency, any popularity at all. Before in this country, you had to be accepted. You had to be part of the group. Now it's probably more trendy to have a problem.

I've always said if I could own one piece it would be Vermeer's The Love Letter, and if I could put it anywhere it would be in a David Chipperfield building. I'm almost there with the building - Chipperfield is building a new house for me in London. The Vermeer is a long way off.

When I have an exhibition, I usually arrange it so that if people want to, they can spend two hours there. That way, people who like it don't feel cheated when they go. I want them to walk into the exhibition space and look low and at other levels and angles. The same with emotions. I want them to be emotionally manipulated, to come out feeling something. I want them to laugh, smile, feel sad. Even if they feel angry, that's okay.

When it comes to words I have a uniqueness that I find almost impossible in art – and it's my words that actually make my art quite unique.

Art is like a lover whom you run away from but who comes back and picks you up.

There are things going on in galleries recently that have shocked me. What I'm going to say is really controversial, but what I find the most provocative is the commerciality of art in general. And the fact that a lot of people have forgotten what the meaning of art is and what the intention behind it is.

Because of the amount of press attention, people went to see this dirty bed, as if it was a freak show. But when they got there, they saw something else - the bed, stuff on the walls, whatever. For the Tate, it's the highest attendance they ever received for the Turner Prize show. There was a massive queue, and when you got into my bit, you couldn't move.