My first pieces, in an art context, were ways to get myself off the page and into real space. These photographic pieces were ways to, literally, throw myself into my environment. They were photographs not of an activity, but through an activity; the activity (once I planted a camera in the instrument of that activity - once I, simply, held a camera in my hands) could produce a picture.

I always thought of writing as public, I never thought of writing a diary. I had been struck by, jolted by things I had read, and I wanted to do the same to others. I don't think it ever was the notion of an autobiography; I skipped that phase totally, I think.

[My early performance work] started by being the activity of a person, any person, like any other - but once that person became photographed it became a specialized person, the object of a personality cult.

You could walk around behind the typist and read the text, which was about hearing, and what you heard was the sound of the typewriter. Of course, this was a pre-electric typewriter, a typewriter that made noise.

What I never wanted in art - and why I probably didn't belong in art - was that I never wanted viewers. I think the basic condition of art is the viewer: The viewer is here, the art is there. So the viewer is in a position of desire and frustration. There were those Do Not Touch signs in a museum that are saying that the art is more expensive than the people. But I wanted users and a habitat. I don't know if I would have used those words then, but I wanted inhabitants, participants. I wanted an interaction.

If something's public then it seems like the important thing is the person in that public. And the notion of rhetoric. I went to Jesuit schools that focused on first there's grammar, then there's rhetoric, and rhetoric's usually seen as a kind of degraded method, because you're trying to persuade.

Sustainability has become a religion in architecture - not that there's anything wrong with it - but I think it has to work both ways. Everyone thinks architecture has to be subservient to sustainability, but what if we thought in the other direction, like, what can sustainability do to make architecture more exciting?