Catechism 101: The Cosmological Argument for God's Existence episode artwork

EPISODE · Aug 2, 2026 · 16 MIN

Catechism 101: The Cosmological Argument for God's Existence

from Crash Course Catholicism · host Dr Caitlin West

How do we know that God exists? Can reason lead us to God?In this episode, we begin a new series exploring one of the most famous arguments for the existence of God: St Thomas Aquinas’ cosmological argument.Before diving into Aquinas’ First Way, we take a step back and look at the big picture. What exactly is a cosmological argument? How does it work? And why did Aquinas think that observing the ordinary world around us could lead us to the existence of a First Cause or Unmoved Mover?In this episode, we discuss: What a cosmological argument is Why we often reason from visible effects to invisible causes Aquinas’ observations about change, causation, and contingent existence The difference between temporal and hierarchical causes What Aquinas means by a First Cause or Unmoved Mover Why Aquinas is not yet trying to prove every Christian belief about God How this overview prepares us for Aquinas’ First Three Ways This is the first episode in a series unpacking St Thomas Aquinas’ arguments for the existence of God. Whether you’re interested in philosophy, theology, apologetics, or simply wrestling with life’s biggest questions, I hope these episodes help make Aquinas’ thought more accessible and encourage you to explore these remarkable arguments for yourself.SUPPORT THE PODCASTThis podcast relies 100% on the generosity of viewers. If you have found these episodes helpful and would like to support the future of Crash Course Catholicism, please consider donating through the following links: Donate via PayPal: https://www.paypal.com/donate/?hosted_button_id=6WSCLFHLCDXH2 Support on Patreon: https://www.patreon.com/caitlinwest Contact: www.caitlinwest.com Instagram: https://www.instagram.com/crashcoursecatholicism/

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