St. Thomas Aquinas (1225-1274) - Student of St. Albert the Great, and friend of St. Bonaventure, St. Thomas Aquinas brought theology and scholastic philosophy together in a way that remains the standard of Catholic thought to this day. In some ways, St. Thomas can be thought of as a second Augustine, who arguably even surpassed the great father of the Church, and brought Augustine's teaching to a more perfect culmination.
Links
Three of St. Thomas' academic sermons are available as audio books on the Catholic Culture website:
Beware of the False https://www.catholicculture.org/commentary/st-thomas-aquinas-beware-false/
Heaven and Earth Will Pass https://www.catholicculture.org/commentary/st-thomas-aquinas-heaven-and-earth-will-pass/
Send Out Your Spirit https://www.catholicculture.org/commentary/st-thomas-aquinas-send-out-your-spirit/
Also, check out this interview that St. Thomas' namesake - Thomas Mirus - did on the Catholic Culture Podcast with Matthew Minerd, about the education St. Thomas received and his responsibilities as a master of theology and his academic milieu: https://www.catholicculture.org/commentary/161-vocation-thomas-aquinas-matthew-minerd/
The Classics of Western Spirituality volume on Albert & Thomas: https://www.paulistpress.com/Products/3022-X/albert-and-thomas.aspx
And, if you haven't already, check out the episodes on St. Thomas' teacher and mentor, St. Albert the Great, on this Way of the Fathers podcast:
Episode 5.17 St. Albert the Great: Universal Doctor: https://www.catholicculture.org/commentary/517-st-albert-great-universal-doctor/
Episode 5.18 St. Albert the Great: The Miracle of His Time: https://www.catholicculture.org/commentary/518-st-albert-great-miracle-his-time/
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Dr. Papandrea's Homepage: http://www.jimpapandrea.com
Dr. Papandrea's latest book is The Original Church: What it Meant - and Still Means - to Be a Christian: https://scepterpublishers.org/collections/new-releases/products/the-original-church-what-it-meant-and-still-means-to-be-a-christian?variant=46258102337713
Dr. Papandrea's YouTube channel, The Original Church: https://www.youtube.com/@TheOriginalChurch
Theme Music: Gaudeamus (Introit for the Feast of All Saints), sung by Jeff Ostrowski. Courtesy of Corpus Christi Watershed: https://www.ccwatershed.org/