Photography is essentially an act of recognition by street photographers, not an act of invention. Photographers might respond to an old man’s face, or an Arbus freak, or the way light hits a building—and then they move on. Whereas in all the other art forms, take William Blake, everything that came to that paper never existed before. It’s the idea of alchemy, of making something from nothing.

I believe in the invisible. I do not believe in the definitive reality of things around us. For me, reality is the intuition and the imagination and the quiet voice inside my head that says: isn't that extraordinary? The things in our lives are the shadows of reality, just as we ourselves are shadows.

You can never capture a person in picture, never. You might get an interesting expression or gesture. I almost never research a picture subject ahead of time. I think Karsh is full of baloney. Can you imagine spending a whole week out in La Jolla with Jonas Salk soaking up his ambiance, then wind up making him look as if he's in the studio in Ottawa with his thumb under his chin?

I am interested in the nature of things. The nature of something is quite different from the way it looks.

I never photograph sunsets and I never photograph moonrises. I'm not interested in what things look like.

Photography is very presumptuous. Photographers are always photographing other people's lives - something they know nothing about - and drawing great inferences into it.

The question of truth is forever in the air, and people look for it with particular fervor in art.