For a time a member of the Young Communist League and then of the Trotskyist Socialist Workers Party, through his study under Adler of the works of St. Thomas Aquinas he was baptized in the Catholic Church and received his Doctorate in Political Science at the University of Notre Dame.
He received a second Ph.D. in Philosophy and the Master's in Sacred Theology, the latter a post-doctoral degree conferred by an international commission of the Order of Preachers.
He has also received an honorary doctorate from Aquinas Institute of Theology in St. Louis, MO, of which he was President from 1963 to 1969.
Also he has been Professor of Theology at the Pontifical John Paul II Institute for Studies in Marriage and Family, Washington, D.C, affiliate of the Lateran University, Rome, and for his work there was honored with the medal Pro Ecclesia et Pontifice conferred by John Paul II.
During 2001-2002 he was visiting lecturer at the Institute for the Psychological Sciences and the Pope John Paul II Cultural Center, Washington DC.