Mr. Koons's work has always inspired architects, which I think is very interesting. I think he is an artist who has reinvented himself so many times and reinvented so many different series.

I think the art fair is very much a form of urbanism. I think something really happens to the cities when such a fair happens. The city becomes an exhibition; it's amazing.

At a certain time, an artist needs a big retrospective. At other times, they need a more focused exhibition. It's a different story each time; it's about establishing a dialogue.

There is nothing deeper than to work for a year with the same artist.

My great inspiration has always been Studs Terkel, who is a wonderful American oral historian. He was a radio DJ at first, interviewed a lot of jazz musicians, and at some point started to interview Americans about work.

I would go from one city to the next, inspired by the monks in the Middle Ages, who would carry knowledge from one monastery to the next monastery.