When I was a child and heard about angels, I was both frightened and fascinated by the thought of these enormous, invisible presences in our midst. I conceived of them not as white-robed androgynes with yellow locks and thick gold wings, which was how my friend Matty Wilson had described them to me--Matty was the predecessor of all sorts of arcane knowledge--but as big, dark, blundering men, massive in their weightlessness, given to pranks and ponderous play, who might knock you over, or break you in half, without meaning to. When a child from Miss Molyneaux's infant school in Carrickdrum fell under the hoofs of a dray-horse one day and was trampled to death, I, a watchful six year old, knew who was to blame; I pictured his guardian angel standing over the child's crushed form with his big hands helplessly extended, not sure whether to be contrite or to laugh.