The challenge for me has first been to see things as they are, whether a portrait, a city street, or a bouncing ball. In a word, I have tried to be objective. What I mean by objectivity is not the objectivity of a machine, but of a sensible human being with the mystery of personal selection at the heart of it. The second challenge has been to impose order onto the things seen and to supply the visual context and the intellectual framework - that to me is the art of photography.