So instead of Plato’s philosophy of transcendence, in which everything is a reflection or a sign of something higher and more real, Aristotle gives us a philosophy of causation. Everything that is, has been caused to be or made to happen; and when we discover the cause or causes of a thing, we learn what it is supposed to do and be. We “possess unqualified scientific knowledge of a thing,” Aristotle declares in his Posterior Analytics, “when we think that we know the cause on which the fact depends, as the cause of that fact and of no other.”16 Causes for Aristotle come in clusters of four.
