The Five Ways (Aquinas)

Aquinas' Five Ways are philosophical arguments suggesting God's existence through observed evidence in the world. They include: 1) the Unmoved Mover—everything that moves is caused by something else; there must be an initial unmoved mover, which is God. 2) the First Cause—everything has a cause, so there must be a first uncaused cause, identified as God. 3) Contingent Beings—things that exist might not have existed, so there must be an necessary being—God—that sustains existence. 4) Degrees of Perfection—qualities like goodness imply a perfect standard, which is God. 5) Intelligent Design—the universe's order suggests an intelligent designer, God.