I'm a messenger. I don't want people to be concerned about me. I want them to be concerned about the people in the pictures. I try to use whatever I know about photography to be of service to the people I'm photographing. I'm trying not to create photographs that viewers will look at and think: "What a good photographer he is," or "Look what an interesting composition he can make." I want the first impact, and by far the most powerful impact, to be about an emotional, intellectual and moral reaction to what is happening to these people. I want my presence to be transparent.