Audrey Niffenegger said this quote

Sister Carmelita says animals don't have soulsOf course animals have souls, where did she get that idea?She said the Pope says. The Pope's an old meanie. Animals have much nicer souls than we do. They never tell lies or blow anybody up. They eat each other. Well, they have to eat each other; they can't go to Dairy Queen and get a large vanilla cone with sprinkles, can they? They could eat grass.So could we, but we don't. We eat hamburgers.