In The Birth of Purgatory, Jacques Le Goff, the brilliant medievalist and renowned Annales historian, is concerned not with theological discussion but with the growth of an idea, with the relation between belief and society, with mental structures, and with the historical role of the imagination. Le Goff argues that the doctrine of Purgatory did not appear in the Latin theology of the West before the late twelfth century, that the word purgatorium...