This chapter considers the meaning of meaning. Far from being archaic and superseded, Aristotle’s metaphysics—as also his logic—is a necessary framework for allowing us to structure the world as an architecture of meaning. The world is, on this basis, comprised of beings interacting through the “means” of natural and human processes. We consider a range of these processes as examples, including that of building a wall. The “four causes” are a related intellectual tool for understanding the movement of beings through the world. This framing reduces the world to its basic components but avoids reducing it to a single idea or ideology. Reality is on this basis necessarily and meaningfully complex. We are drawn back to Aristotle’s philosophy of realism as a correction to Plato’s philosophy of idealism. The ultimate comparison we face is between Aristotle’s world of beings with their senses of meaning and a world represented through mathematics as abstract laws to which we can (somehow) reduce meaning.