10
" Important safety tip with most of the spiritual world: if you ignore it, it has less power. This does not work with demons or other demi-beings. Other exceptions to the rule are vampires, zombies, ghouls, lycanthropes, witches...Oh, hell, ignoring only works for ghosts. "
― Laurell K. Hamilton , The Laughing Corpse (Anita Blake, Vampire Hunter, #2)