In 1967, when 23-year-old James Turrell created his first light projection, he broke new ground in a way that would decisively influence his generation and the development of art. Though Turrell worked in the context of Minimal Art and the Earthwork movement, his art at this early stage displayed -- as it still does -- a sensibility all his own. This book reveals the ways in which Turrell's art has developed, and offers an extensive overview of his work from its earliest stages to the present. Turrell is above all preoccupied with the phenomenon of light -- and his architectural projects and installations often transform their surroundings into translucent sculptural bodies. From his first "Projection Pieces" to the "Roden Crater Project" in the Arizona desert, this volume presents over 30 years of this seminal artist's work, and includes critical essays by Daniel Bernbaum, Georges Didi-Hubermann, Michael Rotondi, and Paul Virilio.