"Humans are twofold beings. We have a divine and an animal nature. If we feel, think, and act as divine beings should act, we are a true human; if we feel and act like an animal, we are then an animal, and the equal of those animals whose mental characteristics are manifested in us. An exalted imagination caused by a desire for the good raises us up; a low imagination caused by a desire for that which is low and vulgar drags us down and degrades us. The spirit is the master, imagination the tool, and the body the plastic material."