XLI. The Byzantine and Sassanid Empires
THE GREEK-SPEAKING eastern half of the Roman Empire showed much more political tenacity than the western half. It weathered the disasters of the fifth century A.D., which saw a complete and final breaking up of the original Latin Roman power. Attila bullied the Emperor Theodosius II and sacked and raided almost to the walls of Constantinople, but that city remained intact. The Nubians came down the Nile and looted Upper Egypt, but Lower Egypt and Alexandria were left still fairly prosperous. Most of Asia Minor was held against the Sassanid Persians.
The sixth century, which was an age of complete darkness for the West, saw indeed a considerable revival of the Greek power. Justinian I (527-565) was a ruler of very great ambition and energy, and he was married to the Empress Theodora, a woman of quite equal capacity who had begun life as an actress. Justinian reconquered North Africa from the Vandals and most of Italy from the Goths. He even regained the south of Spain. He did not limit his energies to naval and military enterprises. He founded a university, built the great church of Sta. Sophia in Constantinople and codified the Roman law. But in order to destroy a rival to his university foundation he closed the schools of philosophy in Athens, which had been going on in unbroken continuity from the days of Plato, that is to say for nearly a thousand years.
From the third century onwards the Persian Empire had been the steadfast rival of the Byzantine. The two empires kept Asia Minor, Syria and Egypt in a state of perpetual unrest and waste. In the first century A.D., these lands were still at a high level of civilization, wealthy and with an abundant population, but the continual coming and going of armies, massacres, looting and war taxation wore them down steadily until only shattered and ruinous cities remained upon a countryside of scattered peasants. In this melancholy process of impoverishment and disorder lower Egypt fared perhaps less badly than the rest of the world. Alexandria, like Constantinople, continued a dwindling trade between the east and the west.
Science and political philosophy seemed dead now in both these warring and decaying empires. The last philosophers of Athens, until their suppression, preserved the texts of the great literature of the past with an infinite reverence and want of understanding. But there remained no class of men in the world, no free gentlemen with bold and independent habits of thought, to carry on the tradition of frank statement and enquiry embodied in these writings. The social and political chaos accounts largely for the disappearance of this class, but there was also another reason why the human intelligence was sterile and feverish during this age. In both Persia and Byzantium it was an age of intolerance. Both empires were religious empires in a new way, in a way that greatly hampered the free activities of the human mind.
Of course the oldest empires in the world were religious empires, centring upon the worship of a god or of a god-king. Alexander was treated as a divinity and the Caesars were gods in so much as they had altars and temples devoted to them and the offering of incense was made a test of loyalty to the Roman state. But these older religions were essentially religions of act and fact. They did not invade the mind. If a man offered his sacrifice and bowed to the god, he was left not only to think but to say practically whatever he liked about the affair. But the new sort of religions that had come into the world, and particularly Christianity, turned inward. These new faiths demanded not simply conformity but understanding belief. Naturally fierce controversy ensued upon the exact meaning of the things believed. These new religions were creed religions. The world was confronted with a new word. Orthodoxy, and with a stern resolve to keep not only acts but speech and private thought within the limits of a set teaching. For to hold a wrong opinion, much more to convey it to other people, was no longer regarded as an intellectual defect but a moral fault that might condemn a soul to everlasting destruction.
Both Ardashir I who founded the Sassanid dynasty in the third century A.D., and Constantine the Great who reconstructed the Roman Empire in the fourth, turned to religious organizations for help, because in these organizations they saw a new means of using and controlling the wills of men. And already before the end of the fourth century both empires were persecuting free talk and religious innovation. In Persia Ardashir found the ancient Persian religion of Zoroaster (or Zarathushtra) with its priests and temples and a sacred fire that burnt upon its altars, ready for his purpose as a state religion. Before the end of the third century Zoroastrianism was persecuting Christianity, and in 277 A.D. Mani, the founder of a new faith, the Manichaeans, was crucified and his body flayed. Constantinople, on its side, was busy hunting out Christian heresies. Manichaean ideas infected Christianity and had to be fought with the fiercest methods; in return ideas from Christianity affected the purity of the Zoroastrian doctrine. All ideas became suspect. Science, which demands before all things the free action of an untroubled mind, suffered a complete eclipse throughout this phase of intolerance.