About the Holy Spirit
Absolute Relativism
Abuse of Language Abuse of Power
All About the Angels
An Anthology
An Exorcist Explains the Demonic
An Exorcist More Stories
An Introduction to Moral Theology (Second Edition)
An Introduction to Philosophy: Perennial Principles of the Classic Realist Tradition
An Introduction to the Theology of Creation
An Investigation Concerning the State
Angelic Virtues and Demonic Vices: Aquinas's Practical Principles for Reaching Heaven and Avoiding Hell
Angels (and Demons)
Angels All Around Us: A Sightseeing Guide to the Invisible World
Angels and Devils
Angels and their Mission
Answering the New Atheism, Dismantling Dawkins' Case Against God
Antichrist (Mediatrix)
Apology: Love as the State of Things
Aquinas and Modern Science
Aquinas's Shorter Summa: Saint Thomas Own Concise Version of His Summa Theologica
Ask Peter Kreeft: The 100 Most Interesting Questions He's Ever Been Asked
At the Dawn of Humanity: The First Humans
Atonement: Soundings in Biblical, Trinitarian and Spiritual Theology
