In Defining Heresy, Irene Bueno investigates the theories and practices of anti-heretical repression in the first half of the fourteenth century, focusing on the figure of Jacques Fournier/Benedict XII (c.1284-1342). Throughout his career as a bishop-inquisitor in Languedoc, theologian, and, eventually, pope at Avignon, Fournier made a multi-faceted contribution to the fight against religious dissent. Making use of judicial, theological, and...