Societies in Western Europe undergo periods of spiritual excitement in which people are more open to signs from heaven or elsewhere, and lulls during which those who claim direct messages from the divine are ignored, ridiculed, or persecuted. Since the late 1960s, Catholic Europe has been in the throes of a kind of re-enchantment, with its immediate model the visions at Medjugorje and its background the intensive promotion of the visions of La Salette,...