The Republic describes reason, spirit, and appetite as this thing's three parts.
A counterexample in one text compares this concept to a tailor who makes several cloaks over his lifetime. The different parts of this concept are illustrated by a story about Leontius, who cannot look away from a pile of corpses. By one argument, this entity must have a certain property since opposites such as sleeping and waking generate each other. This entity is compared to a chariot being pulled by a black horse and a white horse in the (*) Phaedrus. A dialogue about this entity puts forth the "affinity argument" and the "knowledge as recollection" theory for one of its properties. The Republic describes reason, spirit, and appetite as this thing's three parts. Before drinking hemlock in the Phaedo, Socrates makes a case for the transmigration of this entity. For 10 points, name this immaterial part of a person that Plato believed was immortal.
A counterexample in one text compares this concept to a tailor who makes several cloaks over his lifetime.
the soul [or psyche; or the immortality of the soul]