At a first glance, New Moon defines werewolves as good and vampires as evil. Werewolves exist to protect humans from blood-sucking vampires. Vampires, on the other hand, are naturally disposed to kill humans. Physically, werewolves are half-human, while vampires are undead and not at all human. Yet, both creatures struggle with self-control and it’s not safe for humans to be around either of them. In New Moon, final judgment over good and evil seems to lie with personal choice. Edward chooses to be a selfless, good person, and so does Jacob.