The University of St. Thomas community mourns the passing of Thomas “Tom” Dennis Sullivan, a beloved professor of philosophy, distinguished scholar and dedicated teacher whose contributions to the university spanned 45 years. Sullivan passed away on Oct. 26, 2026. He was 88 years old.
A deeply respected member of the St. Thomas faculty, Sullivan was known for his intellectual rigor, commitment to the pursuit of truth and profound influence on generations of students. He held the Aquinas Chair in Philosophy and Theology from 1990 until his retirement in 2011, and his teaching reflected a lifelong dedication to philosophical inquiry and the Catholic intellectual tradition.
His exceptional contributions to teaching and scholarship earned him numerous honors. Students named him Teacher of the Year five times, and his faculty colleagues selected him as Professor of the Year in 1985. He also received the Burlington Northern Faculty Achievement Award for Teaching and Scholarship in 1987 and the John Ireland Presidential Award for Outstanding Achievement as Teacher-Scholar in 2008.
A prolific scholar, Sullivan coauthored "The Agnostic Inquirer: Revelation from a Philosophical Standpoint" with Sandra Menssen and "Modern Challenges to Past Philosophy: Arguments and Responses with Russell Pannier." He authored or coauthored more than 50 scholarly articles and continued his intellectual work and writing until the final days of his life.
Sullivan will be remembered for his kindness, humor, intellectual curiosity and generosity toward students and colleagues. His life and work embodied the university's commitment to the pursuit of truth and the integration of faith and reason.
He earned his undergraduate degree from DePaul University and his doctorate in philosophy from St. John's University in New York. He and his wife, Virginia “Ginny” Sullivan, moved to Saint Paul in 1966. They were married for 51 years before her death in 2014.
He is survived by his six children, 19 grandchildren, two great-grandchildren and extended family.
A wake will be held Sunday, Nov. 1, from 3-6 p.m. at O'Halloran & Murphy in St. Paul. A Mass of Christian Burial will be celebrated Monday, Nov. 2, at 10:30 a.m. at Nativity of Our Lord Catholic Church in Saint Paul. Burial will be private.
Memorial contributions may be made to Our Lady of Peace Hospice & Home Healthcare or Nativity of Our Lord School.
