Plato's Divided Line

Plato was Socrates’ student for many years and although he leaned many things from him, they happened to disagree on the unity of the soul. Socrates divides the soul. Socrates does not seem to deny that the soul is a unity. He seems to believe that the soul is both many and one. Plato came up with his own views on the soul based off of what he learned from Socrates. There are three important factors in Plato’s teachings and that’s justice is better than injustice (because justice is the aerate of the human soul, there are three parts to the soul, and finally that happiness is fulfilling ones soul. The three parts of the soul are the rational, the spirited, and the appetitive. The rational or wisdom virtue is the thinking part of the soul, which loves the truth and seeks to learn it. This part also seems to dominate the rest of the virtues. The spirited or courage virtue is the part that gets angry when it perceives (for example) an injustice being done. This is the part of us that loves to face and overcome great challenges; the part that can steel itself to adversity, and that loves victory, winning, challenge, and honor. The appetitive or appetites, which includes all our myriad desires for various pleasures, comforts, physical satisfactions, and bodily ease. There are so many of these appetites that Plato does not bother to count them, but he does note that they can often be in conflict even with each other. Plato believes that we need an absolute balance of these things in order to achieve happiness. This would mean a united soul for pure happiness according to Plato.
Descartes has a totally opposite opinion on humans. He believes that our mind and body are completely divided, “The first such belief was that I had a face, hands, arms and the whole structure of bodily parts that corpses also have—I call it the body. The next belief was that I ate and drank, that I moved about, and that I engaged in sense-perception and thinking; these things, I thought, were