"Matthew kept hinting that his desire - for blood, chiefly- was so strong that it put everything else at risk. But vampires weren’t the only creatures who had to manage such strong impulses. Much of what qualified as magic was simply desire in action. Witchcraft was different- that took spells and rituals. But magic? A wish, a need, a hunger too strong to be denied- these could turn into deeds when they cross a witch’s mind."