
Aquinas’s Proofs for God’s Existence
Proving God's ExistenceThe One God
25 lessonsDoes God exist? This is one of the great questions, and Thomas Aquinas takes it head on with his famous “Five Ways” or “Five Proofs” for the existence of God. In this course, we will unpack each proof over several short episodes, outlining how they work, adding context, and answering objections. With a little study, you’ll find that Aquinas’ proofs are not only profound, but even life changing.What you will learn
- What it would mean to “prove” God’s existence
- How each proof for God’s existence works
- Additional context for St. Thomas’ proofs
- Answers to common objections
Course Content

Lesson 1: What Would It Mean to 'Prove' God Exists?

Lesson 2: The First Way: Aquinas's Favorite Argument for the Existence of God

Lesson 3: The First Way: What's Wrong With Aquinas's Argument?

Lesson 4: The Second Way: How Aquinas's Proof Works

Lesson 5: The Second Way: What is Efficient Causality?

Lesson 6: The Second Way: Proving God's Existence Through Efficient Causality

Lesson 7: The Third Way: You Didn't Have to Exist (But You Do!)

Lesson 8: The Third Way: The Difference Between Necessary and Possible Beings

Lesson 9: The Third Way: How Aquinas Argues for God's Existence From Contingency

Lesson 10: The Fourth Way: The Least Popular of Aquinas' Five Ways

Lesson 11: The Fourth Way: Can One Statement Be More True Than Another?

Lesson 12: The Fourth Way: Why Does Truth Depend Upon Being?

Lesson 13: The Fourth Way: If You're the Tallest, You're Also a Cause!

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Lesson 14: The Fifth Way: Proving God's Existence From the Rational Order in Nature

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Lesson 15: The Fifth Way: What is God's Role in Ordering the Physical World?

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Lesson 16: The Fifth Way: Aquinas and Arguments from Modern Science

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Lesson 17: Aquinas's Simplest Proof for the Existence of God

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Lesson 18: Proving God's Existence From the World's Order

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Lesson 19: A Metaphysical Argument for the Existence of God

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Lesson 20: How the Essentia Argument for God’s Existence Works

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Lesson 21: How Can We Name God? The Triplex Via

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Lesson 22: How the Existence Argument Works

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Lesson 23: Can Nominalism Deny the Existence of God?

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Lesson 24: Can You Prove God Exists by Reason Alone?

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Lesson 25: Is Belief in God Rational?
Instructors

Fr. Ambrose Little, O.P.Director, Thomistic Institute.
Assistant Professor of Philosophy, Dominican House of Studies.

Fr. James Brent, O.P.Assistant Professor of Philosophy and Chaplain to Commuter Students, Dominican House of Studies.

Fr. John Baptist Ku, O.P.Associate Professor of Dogmatic Theology, Dominican House of Studies.

Fr. Cajetan Cuddy, O.P.Assistant Professor of Dogmatic and Moral Theology, Dominican House of Studies.
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