In a still photograph you basically have two variables, where you stand and when you press the shutter. That's all you have.

I actually try and work before my mind is telling me what to do.

Part of it has to do with the discipline of being actively receptive. At the core of this receptivity is a process that might be called soft eyes. It is a physical sensation. You are not looking for something. You are open, receptive. At some point you are in front of something that you cannot ignore.

I could feel myself changing physically. It was like something dropped out of the sky. Seeing her on the fire escape had given me a certain feeling, and then when I saw the photograph of her, it gave me a similar feeling. And I thought that was an incredibly powerful thing - that a photograph could give you a feeling that was similar to a feeling you had in the physical world. Nobody could've told me that. I knew what I was going to do for the rest of my life.

You're suddenly seeing the coherence and the interconnectedness of everything, left to right, top to bottom, front to back. It's all connected, and, somehow, it's all in balance. And that's, of course, when you go, 'Yes!'.

It can happen anytime, anywhere. I mean, you don't have to be in front of stuff that's going to make a good photograph. It's possible anywhere.

Some of my best work is done when I'm half asleep.