"The controversy between the Dominican Durandus of St. Pourcain and his order plays a central role in explaining how Thomas Aquinas became one of the most influential medieval theologians. Covering a period of almost twenty years in the early fourteenth century, this controversy saw the confrontation of two Dominican theologians of the first rank, at a time when the order was fully engaged in promoting the doctrine of Aquinas. Through a close examination of the central issues from unpublished manuscript sources, Isabel Iribarren reveals a picture of the debate that challenges the standard accounts of a clear-cut clash between 'Thomists' and 'anti-Thomists'."--Jacket.