Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. East West Schism, History of the East West Schism, Primacy of the Roman Pontiff, Catholic Eastern Orthodox theological differences, Contra Errores Graecorum, History of Christianity, Papal supremacy, Romanian Church United with Rome, Greek-Catholic, Filioque, Theoria, Noesis, Spiritual warfare, Tabor Light, Eastern Orthodox Church organization, Apostolic succession.