When I was teaching I often said to students that you are trying to be too creative, don't be too creative, because there is so much already in what you are making, you don't need to do very much. You just need to do a little bit, and that is a lot.

There is a complete difference between art and the art market. Prices are high now for the simple reason that there are people are willing to pay them. The market dominates the art world today because at the moment collectors call the shots. Like everything else that won't last forever.

In the late 70's I started to make drawings of the ordinary objects I had been using in my work. Initially I wanted them to be ready-made drawings of the kind of common objects I had always used in my work. I was surprised to discover I couldn't find the simple, neutral drawings I had assumed existed, so I started to make them myself.

I wanted to make new works of very contemporary objects, which I thought was interesting because many of them are manufactured in China, but these objects are universal, they go across all languages, all cultures.

I was poorer than anyone I'd ever met. But it was a great time to be a young artist - I remember it as a period of exceptional creative freedom and adventure, when one was regularly presented with works of art unlike anything one had ever seen before.

I think the best approach is not to be too much like the thing that they are referring to, see it as a guide.

The first exhibition that I used bright colours in painting the room was at a gallery in Paris, and there were seven rooms in the gallery. It was very nice gallery, not very big rooms, around the courtyard, it was a very French space. So I painted each room in different colour. When people came to the exhibition, I saw they came with a smile. Everybody smiles - this is something I never saw in my work before.