The MetaphysicsThe Metaphysics is Aristotle's probing look at the fundamental questions of philosophy. The Metaphysics presents Aristotle's mature rejection of both the Platonic theory that what we perceive is just a pale reflection of reality and the hardheaded view that all processes are ultimately material. He argued instead that the reality or substance of things lies in their concrete forms. In so doing, he probed some of the deepest questions of philosophy: