Through much of the twentieth century, a diverse group of thinkers engaged in an interdisciplinary conversation about the meaning of time and history for modern art and architecture. The group included architects Louis Kahn, Everett Victor Meeks, James Gamble Rogers, Paul Rudolph, and Eero Saarinen, artists Anni and Josef Albers, philosopher Paul Weiss, and art historians Henri Focillon, George Kubler, Sibyl Moholy-Nagy, and Vincent Scully.