The Golden Bough, souls were seen as the creature within that animated the body
"If a man lives and moves, it can only be because he has a little man or animal inside, who moves him. The animal inside the animal, the man inside the man, is the soul. And as the activity of an animal or man is explained by the presence of the soul, so the repose of sleep or death is explained by its absence; sleep or trance being the temporary, death being the permanent absence of the soul..."
