  A person in a body can choose to take on the role of a non-cognitive agent by acting solely on appetite or emotion.  In doing so, that person manifests a corrupted desire, a desire for what is evil, the material aspect of the bodily.  Alternatively, a person can distance himself from these desires and identify himself with his rational self.  The very fact that this is possible supplies Plotinus with another argument for the supersensible identity of the person.