Andrew Krasnow's best known work, Core Texts of the Mind (1988) consists of five human brains in colored solution and formaldehyde which float up on a crest of water when breathed into by the viewer. The work, which made its museum debut in 1989 at P.S. 1 examines the commodification of the brain and the ethics surrounding the use of human tissue. The emphasis on the human brain --void of skull, facial characteristics, body or skin -- is Krasnow's statement that the essence of the human spirit / soul / mind is not defined by external appearance but by the "core texts" of one's mind.