The Idea of Nicaea in the Early Church Councils examines the role that appeals to Nicaea (both the council and its creed) played in the major councils of the mid-fifth century. It argues that the conflict between rival construals of Nicaea, and the struggle convincingly to arbitrate between them, represented a key dynamic driving--and unsettling--the conciliar activity of these decades. Mark S. Smith identifies a set of inherited assumptions concerning...