I always took photographs. I photographed a lot of trees, by the way, which is another image I used often in my work, the tree image.

And after a while, you just pare things down more and more and more, until you get to certain basic things which just - basic ideas which just seem to work for you over and over again.

I don't really use still photography very much anymore except to document my work.

I shoot in black and white, sometimes color, sometimes if it looks good I shoot out the window of the airplanes or whatever, anything that - sometimes I secretly take secret photos, shoot video of people on the plane if it's not too crowded. I don't know, whatever comes up.

I'm used to being the background. I'm used to having work that only lasts for a little while. I'm used to being - working in the real world, where real things are.

And we live in a kind of realm of language and words and so forth. So we can sort of relate to them. They don't exist without us. We create words.

You can't just suddenly change gears and reverse yourself or go to the left or the right because there is no left or right. There's always a certain direction that you're moving in.