Finally, in the fifth Way, Aquinas relies on Aristotle’s notion of ‘telos’ or purpose. All things aim towards some ultimate goal or end. But to be guided by a purpose or a goal implies some mind that directs or intends that purpose. That director is, once again, God. Versions of Aquinas’ cosmological and ontological arguments are still accepted by the Catholic Church today, though modern philosophers have almost unanimously rejected all five of Aquinas’ Ways.
