"Well sure, my sculptures are floor pieces. Each one, like any area on the surface of the earth,, supports a column of air that weighs – what is it? – 14.7 pounds per square inch. So in a sense, that might represent a column. It’s not an idea, it’s a sense of something you know, a demarked place. Somehow I think I always thought of it going that way, rather than an idea of a narrowing triangle going to the center of the earth... I have nothing to do with conceptual art. I’m not interested in ideas. If I were interested in ideas, I’d be in a field where what we think in is ideas... I don’t really know what an idea is. One thing for me is that if I can frame something in language, I would never make art out of it. I make art out of things which cannot be framed in any other way. (December 1969, talking with the audience)"