THEOLOGICAL DISPUTES; HERESIES
Eastern Christians, far more than those in the West, devoted themselves to theological speculations. Constantinople and the great Hellenistic cities of Antioch and Alexandria contained many learned scholars who had prolonged and heated arguments over subtle questions of belief. After the Arian controversy had been settled in the fourth century, other disputes concerning the true nature of Christ broke out. These gave rise to many heresies.
NESTORIANISM
The heresy known as Nestorianism, from Nestorius, a patriarch of Constantinople, spread widely in the East. Nestorian missionaries even penetrated to India, China, and Mongolia. The churches which they established were numerous and influential during the Middle Ages, but since then most of them have been destroyed by the Mohammedans. Members of this sect are still to be found, however, in eastern lands. [11]
[Illustration: THE NESTORIAN MONUMENT Evidence of Nestorian missions in China is afforded by the famous monument at Chang-an, province of Shensi. The stone, which was set up in 781 A.D., commemorates by an inscription in Chinese characters and the figure of a cross the introduction of Christianity into northwestern China. A replica of the Nestorian monument was taken to the United States in 1908 A.D. and was deposited in the Metropolitan Museum of Art, New York.]
ORTHODOXY
After the formation of the Nestorian and other heretical sects, the orthodox faith was preserved in the East only by the Greeks of Asia Minor and Europe. The Greek Church, which calls itself the "Holy Orthodox Church," for a time remained in unity with the Roman Church in the West. The final separation of these two churches occurred in the eleventh century. [12]
122. WESTERN CHRISTIANITY: RISE OF THE PAPACY
THE PAPACY
Christianity in the West presented two sharp contrasts to eastern Christianity. In the first place, the great heresies which divided the East scarcely affected the West. In the second place, no union of Church and State existed among western Christians. Instead of acknowledging the religious supremacy of the emperor at Constantinople, they yielded obedience to the bishop of Rome, the head of the Roman Church. He is known to us as the pope, and his office is called the Papacy. We shall now inquire how the popes secured their unchallenged authority over western Christendom.