Throughout the 14th century, numerous other attempts at negotiating union were initiated by Byzantine emperors. Formal meetings were held in 1333, 1339, 1347, and 1355. In 1369 Emperor John V Palaeologus was personally converted to the Roman faith in Rome. All these attempts were initiated by the government and not by the church, for an obvious political reason—i.e., the hope for Western help against the Turks. But the attempts brought no results either on the ecclesiastical or on the political levels. The majority of Byzantine Orthodox churchmen were not opposed to the idea of union but considered that it could be brought about only through a formal ecumenical council at which East and West would meet on equal footing, as they had done in the early centuries of the church. The project of a council was promoted with particular consistency by John Cantacuzenus, who, after a brief reign as emperor (1347–54), became a monk but continued to exercise great influence on ecclesiastical and political events. The idea of an ecumenical council was initially rejected by the popes, but it was revived in the 15th century with the temporary triumph of conciliarist ideas (which advocated more power to councils and less to popes) in the West at the councils of Constance and Basel. Challenged with the possibility that the Greeks would unite with the conciliarists and not with Rome, Pope Eugenius IV called an ecumenical council of union in Ferrara, which later moved to Florence.
The Council of Ferrara-Florence (1438–45) lasted for months and allowed for long theological debates. Emperor John VIII Palaeologus, Patriarch Joseph, and numerous bishops and theologians represented the Eastern church. They finally accepted most Roman positions—the Filioque clause, purgatory (an intermediate stage for the soul’s purification between death and heaven), and the Roman primacy. Political desperation and the fear of facing the Turks again, without Western support, was the decisive factor that caused them to place their signatures of approval on the Decree of Union, also known as the Union of Florence (July 6, 1439). The metropolitan of Ephesus, Mark Eugenicus, alone refused to sign. Upon their return to Constantinople, most other delegates also renounced their acceptance of the council and no significant change occurred in the relations between the churches.
The official proclamation of the union in Hagia Sophia was postponed until December 12, 1452. However, on May 29, 1453, Constantinople fell to the Ottoman Turks. Sultan Mehmed II transformed Hagia Sophia into an mosque, and the few partisans of the union fled to Italy. Theological and monastic renaissance
Paradoxically, the pitiful history of Byzantium under the Palaeologan emperors coincided with an astonishing intellectual, spiritual, and artistic renaissance that influenced the entire Eastern Christian world. The renaissance was not without fierce controversy and polarization. In 1337 Barlaam the Calabrian, one of the representatives of Byzantine humanism, attacked the spiritual practices of the Hesychast (from the Greek word hēsychia, meaning “quiet”) monks, who claimed that Christian asceticism and spirituality could lead to the vision of the “uncreated light” of God. Barlaam’s position was upheld by several other theologians, including Akyndinus and Nicephorus Gregoras. After much debate, the church gave its support to the main spokesman of the monks, Gregory Palamas" class="md-crosslink">St. Gregory Palamas (1296–1359), who showed himself as one of the foremost theologians of medieval Byzantium. The councils of 1341, 1347, and 1351 adopted the theology of Palamas, and after 1347 the patriarchal throne was consistently occupied by his disciples. John VI Cantacuzenus, who, as emperor, presided over the council of 1351, gave his full support to the Hesychasts. His close friend, Nicholas Cabasilas, in his spiritual writings on the divine liturgy and the sacraments, defined the universal Christian significance of Palamite theology. The influence of the religious zealots, who triumphed in Constantinople, outlasted the empire itself and contributed to the perpetuation of Orthodox spirituality under Turkish rule. It also spread to the Slavic countries, especially Bulgaria and Russia. The monastic revival in northern Russia during the last half of the 14th century, which was associated with the name of St. Sergius of Radonezh, as well as the contemporaneous revival of iconography (e.g., the work of the great painter Andrey Rublyov), would have been unthinkable without constant contacts with Mount Athos, the centre of Hesychasm, and with the spiritual and intellectual life of Byzantium.
Along with the Hesychast revival, a significant “opening to the West” was taking place among some Byzantine ecclesiastics. The brothers Prochorus and Demetrius Cydones, under the sponsorship of Cantacuzenus, for example, were systematically translating the works of Latin theologians into Greek. Thus, major writings of St. Augustine, St. Anselm of Canterbury, and St. Thomas Aquinas were made accessible to the East for the first time. Most of the Latin-minded Greek theologians eventually supported the union policy of the emperors, but there were some—like Gennadios II Scholarios, the first patriarch under the Turkish occupation—who reconciled their love for Western thought with total faithfulness to the Orthodox church. Orthodoxy under the Ottomans (1453–1821) The Christian ghetto
According to Muslim belief, Christians as well as Jews were “people of the Book”—i.e., their religion was seen as not entirely false but incomplete. Accordingly, provided that Christians submitted to the dominion of the caliphate and the Muslim political administration and paid appropriate taxes, they deserved consideration and freedom of worship. Any Christian mission or proselytism among the Muslims, however, was considered a capital crime. In fact, Christians were formally reduced to a ghetto existence: they were the Rūm millet, or “Roman nation” conquered by Islam but enjoying a certain internal autonomy.
Blue Mosque (Mosque of Ahmed I), Istanbul, by Mehmed Aga, 1609–16.Shostal Associates
In January 1454 the sultan Mehmed II, who had conquered Constantinople in 1453, allowed the election of a new patriarch, who was to become millet-bachi, the head of the entire Christian millet, or in Greek the “ethnarch,” with the right to administer, to tax, and to exercise justice over all the Christians of the Turkish empire. Thus, under the new system, the patriarch of Constantinople saw his formal rights and jurisdiction extended both geographically and substantially: on the one hand, through the privileges granted to him by the sultan, he could practically ignore his colleagues, the other Orthodox patriarchs; on the other hand, his power ceased to be purely canonical and spiritual but became political as well. To the enslaved Greeks, he appeared not only as the successor of the Byzantine patriarchs but also as the heir of the emperors. For the Ottomans, he was the official and strictly controlled administrator of the Rūm millet. In order to symbolize these new powers, the patriarch adopted an external attire reminiscent of that of the emperors: mitre in the form of a crown, long hair, eagles as insignia of authority, and other imperial accoutrements.
The new system had many significant consequences. Most important, it permitted the church to survive as an institution. Indeed, the prestige of the church was actually increased because, for Christians, the church was now the only source of education, and it alone offered possibilities of social promotion. Moreover, through the legal restrictions placed on mission, the new arrangement created the practical identification of church membership with ethnic origin. And finally, since the entire Christian millet was ruled by the patriarch of Constantinople and his Greek staff, it guaranteed to the Phanariotes, the Greek aristocracy of the Phanar (now called Fener, the area of Istanbul where the patriarchate was, and still is, located), a monopoly in episcopal elections. Thus, Greek bishops progressively came to occupy all the hierarchical positions. The ancient patriarchates of the Middle East were practically governed by the Phanar. The Serbian and Bulgarian churches came to the same fate: the last remnants of their autonomy were formally suppressed in 1766 and 1767, respectively, by the Phanariot patriarch Samuel Hantcherli. This Greek control, exercised through the support of the hated Turks, was resented more and more by the Balkan Slavs and Romanians as the Turkish regime became more despotic, taxes grew heavier, and modern nationalisms began to develop.