A collection is like a dinner party. It is made up of the people you invite, but also the people you don't.

I've already bought another house in Tangier and the one in Deauville has been for sale for some time. As for Yves's Saint Laurent apartment, it is being sold because he's dead. But I won't be furnishing my home from Ikea.

You don't own art. What does that mean? We are trustees of art. Art is in transit with us. That is why an auction is a wonderful thing. You clap your hands and the objects fly away like doves and find other places where they will be protected, loved. That's what I believe.

I hate sentiment when it's inappropriate. I saw someone who went and saw an exhibition and came out in tears. If an exhibition drives you to tears you need to see a psychiatrist immediately. That's what I think.

I carried on buying paintings, works of art, and Yves Saint Laurent, if I may say so, had a right of inspection. We even shared a common reading of the history of art. It would never have crossed Yves's mind to say to me, "Ah, I saw a Pablo Picasso . . ." He knew perfectly well what was interesting with Picasso, as did I.

When journalists come to interview me, it's a part of my life that is exhibited, as if pieces of clothing are being taken off one by one. But it's not very important really.

I love Marcel Proust, but I leave him to his nostalgia. I don't approach art the way most people do. I don't get into Proust by imagining that I am Charlus or whoever. It's the same thing in painting - I try to look at it objectively. There's no pathos in that. It's like Bach's "Goldberg Variations." They have to be approached with a scalpel.