Review by Jean-Claude Larchet of Guillaume Cuchet’s book , Comment notre monde a cessé d’être chrétien. Anatomie d’un effondrement, Éditions du Seuil, Paris, 2018, 276 pp. (How our world ceased to be Christian. Anatomy of a collapse). For half a century, many authors have noted the spectacular decadence of Catholicism in France and more widely in Europe, and have worried about it: Louis Bouyer in The Decomposition of Catholicism (1968), Serge