Ask AI: For Plato, what is his philosophical perspective of "self". Make it briefly

Plato's philosophical perspective of the "self" primarily derives from his theory of Forms. He believed that the true essence or 'self' is the soul, which is eternal and unchanging and is distinct from the body which is temporary and perishable. He viewed the 'self' as being divided into three parts: the rational part, the spirited part, and the appetitive part. For Plato, proper harmony among these parts constitutes a just and well-balanced 'self'. He also suggested that obtaining knowledge and wisdom leads to self-realization, moving the 'self' closer to the truth and the ultimate Form of the Good.