When I was in Wuhan, I went to the art school, which was one of the most important art schools in China, an enormous art school. One of the things that I saw is that the schools are very big and there are so many students. It is very difficult to me to teach creative activity to great numbers of people, because I think you need personal contact with students, you need to speak individually, you need individual contact between teachers and students, you need continuity. To me this is a problem in mass education in every society now.

If you were really interested in being creative in teaching, it was possible to try new methods and that was really what we did in Goldsmiths - we used the freedom of the time.

In the period of '60s to the '90s, British art schools were small, and the number of student was small. The personal contact was great.

I have been using the computer as a work aid since the mid-90's. It is extraordinarily well suited to how I think and work and has transformed my practice. Nearly everything I have done in the past 15 years would have been impossible without it. I use the computer for drawing, composing and colour planning everything, from postage stamps to paintings to architectural-scale installations.

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 studio, it took me a long time to work out how to make paintings that had the intensity that I was able to create by painting whole rooms. There is a very limited number of colours but there are many variations. I decided to use the purest palette that I could.

I would never put a sculpture in front of a painting, so that it is difficult to see the painting. I always place each thing so you can see it isolated. You can focus on every individual work.