The Thomistic Institute

Prof. W. Scott Cleveland explores how to be a good friend by applying Aristotle’s philosophy of human flourishing, highlighting the importance of combating envy and apathy while cultivating the virtues of love and wisdom for lasting, meaningful friendships.

This lecture was given on February 21st, 2025, at University of Michigan.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Professor Scott Cleveland received his PhD in philosophy (Baylor University) and is Associate Professor of Philosophy and Catholic Studies at the University of Mary (Bismarck, ND). His research interests are in ethics, moral psychology, and philosophy of religion. He is especially interested in the study of virtues and emotions, the relation between the two, and the role of each in the moral and intellectual life. His thought is deeply influenced by Aristotle and Aquinas and his work has appeared in journals such as American Catholic Philosophical Quarterly, Res Philosophica, Religious Studies, Religions, and the Proceedings of the American Catholic Philosophical Association. He is the co-editor with Adam Pelser of Faith and Virtue Formation: Essays in Aid of Becoming Good with Oxford University Press.

This project/publication was made possible through the support of Grant 63391 from the John Templeton Foundation. The opinions expressed in this publication are those of the author(s) and do not necessarily reflect the views of the John Templeton Foundation.

Keywords: Aristotelian Ethics, Aristotle, Envy and Apathy, Friendship and Human Flourishing, Love and Wisdom, Nicomachean Ethics, Practical Philosophy, Robert Waldinger, Virtue Ethics, Virtuous Friendship

Prof. Joshua Hochschild compares Plato’s philosophical exploration of love in the Symposium with John Paul II’s Theology of the Body, analyzing how both traditions address the unity of eros and agape, the meaning of embodied love, and the enduring questions of sexual ethics in light of Humanae Vitae.

This lecture was given on February 18th, 2025, at The Basilica of Saint Mary’s Lyceum.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Joshua Hochschild is Professor of Philosophy at Mount St. Mary’s University, where he also served six years as the inaugural Dean of the College of Liberal Arts. His primary research is in medieval logic, metaphysics, and ethics, with broad interest in liberal education and the continuing relevance of the Catholic intellectual tradition. He is the author of The Semantics of Analogy: Rereading Cajetan’s De Nominum Analogia (2010), translator of Claude Panaccio’s Mental Language: From Plato to William of Ockham (2017), and co-author of A Mind at Peace: Reclaiming an Ordered Soul in the Age of Distraction (2017). His writing has appeared in First Things, Commonweal, Modern Age and the Wall Street Journal. For 2020-21 he served as President of the American Catholic Philosophical Association.

Keywords: Agape and Eros, Embodied Love, Humanae Vitae, Imago Dei, John Paul II, Karol Wojtyla, Personalist Philosophy, Plato’s Symposium, Sexual Ethics, Theology of the Body

Fr. Stephen Brock examines the metaphysics of petitionary prayer through the perspectives of C.S. Lewis, Peter Geach, and especially Thomas Aquinas, highlighting how Aquinas’ account uniquely reconciles divine immutability, providence, and the real efficacy of prayer.

This lecture was given on February 7th, 2025, at Duke University.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Stephen L. Brock is a priest of the Prelature of Opus Dei (ordained 1992). He is Ordinary Professor of Medieval Philosophy at the Pontifical University of the Holy Cross in Rome, where he began teaching in 1990.  Since 2008 he has been an Ordinary Member of the Pontifical Academy of St. Thomas Aquinas.  Since 2017 he has been a visiting professor in the Department of Philosophy of the University of Chicago. He is the author of Action & Conduct: Thomas Aquinas and the Theory of Action (T&T Clark, 1998); The Philosophy of Saint Thomas Aquinas: A Sketch (Wipf & Stock, 2015); The Light that Binds: a Study in Thomas Aquinas's Metaphysics of Natural Law (Wipf & Stock, 2020); and numerous articles on various aspects of Aquinas’s thought.

This project/publication was made possible through the support of Grant 63391 from the John Templeton Foundation. The opinions expressed in this publication are those of the author(s) and do not necessarily reflect the views of the John Templeton Foundation.

Keywords: Aquinas, C. S. Lewis, Divine Immutability, Metaphysics of Prayer, Petitionary Prayer, Peter Geach, Providence, Thomistic Philosophy, Time and Eternity, Work and Prayer

Fr. Thomas Joseph White explores whether philosophical skepticism can be overcome by examining Aristotle, Aquinas, Kant, and Nietzsche on metaphysical knowledge, emphasizing foundational principles like non-contradiction and identity.

This lecture was given on February 5th, 2024, at Yale University.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Fr. Thomas Joseph White is the Rector Magnificus of the Pontifical University of St. Thomas (Angelicum) in Rome. Originally a native of southeastern Georgia in the US, Fr. White studied at Brown University, where he converted to Catholicism. He did his doctoral studies in theology at Oxford University, and is the author of various books and articles including Wisdom in the Face of Modernity, A Thomistic Study in Natural Theology (Sapientia Press, 2016), The Incarnate Lord, A Thomistic Study in Christology (The Catholic University of America Press, 2015), The Trinity: On the Nature and Mystery of the One God (Catholic University of America Press, 2022), Principles of Catholic Theology Book III: On God, Trinity, Creation, and Christ (Catholic University of America Press, 2024) and Contemplation and the Cross (The Catholic University of America Press, 2025). With Matthew Levering he is the co-editor of the academic journal Nova et Vetera. In 2011 he was appointed an ordinary member of the Pontifical Academy of St. Thomas Aquinas and in 2019 was named a Distinguished Scholar of the McDonald Agape Foundation. He held the 2018-2019 McInnes Chair for theological inquiry at the Angelicum. In 2022, he was granted an honorary doctorate from the Catholic University of America, and in 2023 he was elected President of the Academy of Catholic Theology. In 2023, Fr. White was also awarded the title Master of Sacred Theology, one of the highest academic awards in the Dominican Order.

Keywords: Adrienne Moore, Aristotle, Kant, Metaphysical Knowledge, Nietzsche, Non-Contradiction, Philosophical Skepticism, Principle of Identity, Reginald Garrigou-Lagrange, Thomistic Metaphysics

Prof. Michael Gorman explains Aquinas’ doctrine that in God, essence and existence are identical, highlighting how this principle underpins divine simplicity and distinguishes God from all created beings.

This lecture was given on June 1st, 2024, at Mount Saint Mary College.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Michael Gorman is Professor of Philosophy at The Catholic University of America in Washington, D.C.  He has doctorates in philosophy and theology, and his work covers both areas, with a special emphasis on metaphysical themes. He is the author of over thirty-five scholarly articles, a book entitled Aquinas on the Metaphysics of the Hypostatic Union (Cambridge University Press, 2017), and a book that will appear in the spring of 2024 entitled A Contemporary Introduction to Thomistic Metaphysics (The Catholic University of America Press, 2024). 

Keywords: Divine Perfection, Divine Simplicity, Essence and Existence, Metaphysical Composition, Philosophy of Religion, Thomistic Metaphysics, Transcendence

Dr. Edmund Lazzari defends the coherence and relevance of the Trinity by addressing Thomas Jefferson’s objections through Thomistic philosophy, emphasizing divine revelation’s role in understanding God’s triune nature.

This lecture was given on March 3rd, 2025, at College of William and Mary.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Edmund Lazzari is Teaching Fellow in the Department of Catholic Studies at Duquesne University. Dr. Lazzari is also a member of the Aquinas and 'the Arabs' International Working Group and affiliated faculty of the Carl G. Grefenstette Center for Ethics in Science, Technology, and Law. A former Basselin Fellow, he earned an ecclesiastical licentiate degree in philosophy from the Catholic University of America, as well as a doctorate in systematic theology and ethics from Marquette University. He has previously taught philosophy and theology at Mount St. Mary's University, Marquette University, the Massachusetts Institute of Technology, and other universities not starting with the letter "M." Dr. Lazzari has published on a wide variety of topics in theology, such as theology and science, the thought of St. Thomas Aquinas, Catholic-Muslim dialogue, liturgical theology, machine learning/AI, Catholic ethics, and extraterrestrial intelligence. He is the author of two books: Why Nature Matters: Unlocking Catholic Doctrine through Commonsense Philosophy (2022) and Miracles in Said Nursi and Thomas Aquinas (Routledge, 2024).

This project/publication was made possible through the support of Grant 63391 from the John Templeton Foundation. The opinions expressed in this publication are those of the author(s) and do not necessarily reflect the views of the John Templeton Foundation.

Keywords: Arianism, Divine Essence, Divine Revelation, Modalist Heresy, Summa Theologica, Thomistic Philosophy, Transcendent Reality, Trinitarian Persons, Unity-in-Diversity, Worship and Salvation

Professor Michael Gorman explores philosophical arguments for God's existence through Aquinas' approach of reasoning from effect to ultimate uncaused cause rather than from definition to existence.

This lecture was given on February 22nd, 2025, at University of Rochester.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Michael Gorman is Professor of Philosophy at The Catholic University of America in Washington, D.C.  He has doctorates in philosophy and theology, and his work covers both areas, with a special emphasis on metaphysical themes. He is the author of over thirty-five scholarly articles, a book entitled Aquinas on the Metaphysics of the Hypostatic Union (Cambridge University Press, 2017), and a book that will appear in the spring of 2024 entitled A Contemporary Introduction to Thomistic Metaphysics (The Catholic University of America Press, 2024).

This project/publication was made possible through the support of Grant 63391 from the John Templeton Foundation. The opinions expressed in this publication are those of the author(s) and do not necessarily reflect the views of the John Templeton Foundation.

Keywords: Argument From Effect to Cause, Divine Faith, Divine Revelation, God's Existence, Metaphysics, Natural Theology, Philosophical Argumentation, Philosophy of Religion, Uncaused Cause

Prof. Patrick Callahan analyzes the poetic genius of Saint Thomas Aquinas in the hymns and sequence of Corpus Christi, highlighting Aquinas’ understanding of beauty, proportion, clarity, and sublimity as essential to both art and spiritual contemplation.

This lecture was given on October 26th, 2024, at Dominican House of Studies.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Prof. Patrick Callahan is director of the Newman Institute for Catholic Thought & Culture as well as Assistant Professor of English and Humanities at St. Gregory the Great Seminary. There he directs and teaches in a Great Books Catholic program for students at the University of Nebraska-Lincoln and other regional colleges. He did his undergraduate work at the University of Dallas and his graduate work at Fordham University in Classics. He lives in Lincoln, NE with his wife and 5 children.

Keywords: Aesthetic Criticism, Beauty, Corpus Christi, Contemplation, Joseph Pieper, Poetry, Saint Thomas Aquinas, Spiritual Formation, Sublimity, The Four Causes

Prof. Patrick Callahan reveals how poetry, as the most Christ-like form of speech and a reflection of human mimesis, plays a vital role in the Christian life by fostering conformity to Christ and deepening the contemplative experience.

This lecture was given on October 26th, 2024, at Dominican House of Studies.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Prof. Patrick Callahan is director of the Newman Institute for Catholic Thought & Culture as well as Assistant Professor of English and Humanities at St. Gregory the Great Seminary. There he directs and teaches in a Great Books Catholic program for students at the University of Nebraska-Lincoln and other regional colleges. He did his undergraduate work at the University of Dallas and his graduate work at Fordham University in Classics. He lives in Lincoln, NE with his wife and 5 children.

Keywords: Aristotelianism, Christian Life, Contemplation, Joseph Pieper, Mimesis, Poetry, Saint Augustine, Spiritual Formation, Only the Lover Sings, W. H. Auden

Prof. Alexander Pruss explores the unique certainty, mystery, and beauty of mathematics, examining philosophical perspectives from Plato to modern logicism, and considers how mathematical beauty points toward deeper realities, including the existence of God.

This lecture was given on October 1st, 2024, at University of North Texas.

For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.

About the Speaker:

Alexander Pruss is professor of philosophy at Baylor University. He has two PhDs, one in mathematics and one in philosophy, and does research in metaphysics, philosophy of religion, ethics, epistemology, philosophy of science and philosophy of mathematics. Much of his work is centered on showing how pretty much everything in reality points to the existence of God. His books include The Principle of Sufficient Reason, Infinity, Paradox, and Causation, and One Body: An Essay in Christian Sexual Ethics. In his spare time, Pruss engages in a variety of hobbies including electronics, software development, and indoor rock climbing where he recently got two Guinness World Records.

Keywords: Aesthetics, Beauty, Epistemology, God, Kurt Gödel, Logicism, Mathematics, Philosophy of Mathematics, Plato, Platonism

This project/publication was made possible through the support of Grant 63391 from the John Templeton Foundation. The opinions expressed in this publication are those of the author(s) and do not necessarily reflect the views of the John Templeton Foundation.