Why Would Anyone Collect Conceptual Art?

Barbara and Aaron Levine are not major philanthropists on the scale of Duncan Phillips or Joseph Hirshhorn, but they bring comparable seriousness, perspicacity and enthusiasm to collecting, which focuses on Marcel Duchamp and Conceptual art by Joseph Kosuth, Lawrence Weiner, and others. A recent tour of their Georgian house in Washington, DC suggests that they are more interested in ideas than in big-ticket trophies and eye candy.