Most of the criticism of my work was pretty good, but occasionally it would not be. And I just sort of felt that they absolutely didn't get what I was doing. It was their limitations on what they thought art should be or what they thought my work should be in relation to earlier work or whatever.

How does any idea come to your mind? I don't know.

Heidegger wrote a book called Was Ist Das Ding - What Is a Thing? which was kind of interesting and influential to me, as a matter of fact. It's a small paperback, which I read. It's about the nature of thingness; what is it? It's a very penetrating analysis of that, and I think a rather influential book. I know other artists who have read it and come up with it.

You know, there are some people who just don't - that cannot get comfortable behind the wheel of a car and always sort of think they're going to kill somebody.

I was a filmmaker. I made movies. I made films. And I always took photos and made films, always from the beginning.

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.

When you present works of art, one thing I've learned is that if you're lucky - [Laughs] - there will be those few people who, shall we say, get it? Really become engaged, become moved by it in their own way. You cannot control what other people are going to think about it.