I have a lot of ideas for art. And it is really - I don't really have time to do them all.

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.

The big thing is I try not to repeat.

I didn't like anti-Vietnam War art. I didn't like feminist art. I thought it was heavy-handed and stupid - as art.

Whatever came out came out. That was it. That's what you live with. If you don't like it, that's your problem.

The Vogels were quite strict in what they acquired. They never acquired a projection. They never acquired a sound piece. They were never big on photos that much, unless it was photos documenting something. They had some limitations into what they bought.

I know where the mistakes are. Nothing is perfect and I understand that.