Introduction / James Likoudis -- Chapter I. Life and works of Demetrios Kydones -- A. Works of Latin theology / translated by Demetrios Kydones -- B. Works of Latin theology / translated by Prochoros Kydones -- C. Note on Palamism -- Chapter II. Apologia for his conversion / by Demetrios Kydones -- Chapter III. Eastern Orthodoxy: primacy and reunion -- -- Chapter IV. Two Irenic Orthodoxy lay theologians: Nikos Nissiotis and Alexis Stawrowsky -- Chapter V. The teaching of Saint Thomas on the relation of trinity and church -- Chapter VI. Rome and Eastern Orthodoxy -- Appendix I. St. Thomas Aquinas' Contra Errores Graecorum (1264 A.D.) -- Appendix II. Letter of Peter Damian, Cardinal - Bishop of Ostia, on the procession of the Holy Spirit (1061 A.D.) -- Appendix III. Letter of John de Fontibus, O.P., to the abbot and monks of a Greek monastery in Constantinople (1350 A.D.) -- Appendix IV. Pope John Paul II on the Filioque (general audience, November 7, 1990) -- Select bibliography.