Plato and Aristotle: Emphasis on the 2 World vs 1 World

What is the world really like? Plato and Aristotle, the giants of western philosophy, attempted to answer this question with their own theories about ultimate reality. Plato was the first one of these ancient Athenians to come onto the scene.
Plato's metaphysical theory goes as follows. He believed that at the core of every person is the Immortal Soul. This soul can be lead by one of three things: reason, spirit, or appetites. Among these he argued reason was the best, most important, and should be in dominance over the others. …