Quote from Djinn Rummy Genies rarely have nightmares, for the same reason that elephants don't usually worry about being trampled underfoot. With the possible exception of bottles, there's nothing in the cosmos large enough or malicious enough to frighten them, or stupid enough to try.   (Tom Holt, "Djinn Rummy") You can order this book online from Amazon.co.uk: Djinn Rummy