“To accommodate the transmission of light through colored glass, Marden turned to a brighter, purer palette than was his usual preference and settled on the primaries plus green for the Basel windows. In part influenced by his growing interest in alchemy, he decided to work with combinations of colors limited to three (the Trinity) for the linear components and four (the elements - earth, air, fire, water) for the monochrome panels… the programs often draw on premises derived from his readings in literature, mythology, symbolism, philosophy, and world religion.”
Brenda Richardson, “Even a Stone Knows You,” in Exh. Cat., New York, Museum of Modern Art, Plane Image: A Brice Marden Retrospective, 2006