Like letting spiders live because they eat mosquitoes, Clary thought. "So they're good enough to let live, good enough to make your food for you, good enough to flirt with-but not really good enough? I mean, not as good as people.
Cassandra Clare: The Mortal Instrument Series (3 books): City of Bones; City of Ashes; City of Glass (ed. Simon and Schuster, 2010) - ISBN: 9781442430044