Robert Smithson. A Heap of Language, 1966. pencil drawing, 6 1/2 x 22 inches. The Over Holland Collection. © Estate of Robert Smithson
My sense of language is that it is matter and not ideas - i.e., "printed matter". R.S.June 2, 1972.
The Writings of Robert Smithson, edited by Nancy Holt, New York, New York
University Press, 1979