" Demons are coming, Vivian. They're finding ways around the rules. The genetic checks and balances have been broken, and the demon genome is going to repair itself. We're going to become who we were. Maybe not this generation, maybe not the next, but when it happens, the witches can either be ready, or they can be pixies being eaten by giant birds. "

― Kim Harrison , Pale Demon (The Hollows, #9)