Art historians Thomas Crow and Alexander Dumbadze discuss the artistic milieu of the 1960s and 1970s and how it shaped Allen Ruppersberg and his contemporaries. Crow’s recent book, No Idols: The Missing Theology of Art, turns away from contemporary cultural theories to address a blind spot in today’s art historical inquiry: religion. Dumbadze is the author of Bas Jan Ader: Death Is Elsewhere, about the late Dutch-born Conceptual artist Bas Jan Ader.