Weiner created his first book "Statements" in 1968, a small 64-page paperback with texts describing projects. Published by The Louis Kellner Foundation and Seth Siegelaub, "Statements" is considered one of the seminal conceptual artist's books of the era. He was a contributor to the famous "Xeroxbook" also published by Seth Siegelaub in 1968. Weiner's composed texts describe process, structure, and material, and though Weiner's work is almost exclusively language-based, he regards his practice as sculpture, citing the elements described in the texts as his materials.