But we most of us lose our sense of proportion in the presence of a nun; and George, thus exposed at short range to this bride of Christ in her uncompromising medieval habit, finds himself becoming flustered, defensive. An unwilling conscript in Hell’s legions, he faces the soldier of Heaven across the frontline of an exceedingly polite cold war. In every sentence he addresses to her, he calls her ‘Sister’; which is probably just what she doesn’t want.