Breviaries, books of standard religious readings for particular denominations, are a familiar genre with a long pedigree. But you've definitely never seen a breviary like this one. The Sex of the Angels is a playful, often ironic take on the breviary in the form of a collection of letters that begins by taking up early Christian cosmology and follows the Biblical mutations of the angel from Babylon to the present day. As it goes along, Raoul...