A convert from Greek Orthodoxy, James Likoudis is an internationally known apologist, one who has dedicated his life to reconciling his Eastern Orthodox brethren with the Catholic Church Jesus Christ founded. He excels in analyzing the key issues that separate Catholics and Orthodox, including regarding papal and conciliar history, and he cherishes all we hold in common in Christ.

Likoudis served for more than twenty-five years at the lay apostolate Catholics United for the Faith (CUF), including as president. His other books include The Pope, The Council, and The Mass; The Divine Primacy of the Bishop of Rome and Modern Eastern Orthodoxy: Letters to a Greek Orthodox on the Unity of the Church; Eastern Orthodoxy and the See of Peter: A Journey Towards Full Communion; Ending the Byzantine Greek Schism; and Heralds of a Catholic Russia: Twelve Spiritual Pilgrims from Byzantium to Rome. He has written and lectured widely on ecumenism, religious education, liturgy, sex education, family life, and the role of the laity in the Church. He is also a former college instructor in history and government, with over twenty years of teaching experience. Likoudis received an honorary Doctorate of Divinity from Sacred Heart Major Seminary in Detroit (2020). He and his late wife Ruth have six children, thirty-five grandchildren, and forty-five great-grandchildren.