See C. Diehl, Justinien et la civilisation byzantine au VIe siècle (1901, repr. 1969); J. W. Barker, Justinian and the Later Roman Empire (1966); R. Browning, Justinian and Theodora (1971); A. Gerostergios, Justinian the Great (1982).
One of the most important figures of Late Antiquity, Justinian's rule constitutes a distinct epoch in the history of the Byzantine Empire. The impact of his administration extended far beyond the boundaries of his time and empire. Justinian's reign is marked by the ambitious but ultimately failed renovatio imperii, or "restoration of the empire". This ambition was expressed in the partial recovery of the territories of the Western Roman Empire, including the city of Rome itself. A still more resonant aspect of his legacy was the uniform rewriting of Roman law, the Corpus Juris Civilis, which is still the basis of civil law in many modern states. His reign also marked a blossoming of Byzantine culture, and his building program yielded such masterpieces as the church of Hagia Sophia, which was to be the center of Eastern Orthodox Christianity for many centuries.
Procopius provides our primary source for the history of Justinian's reign. The Syriac chronicle of John of Ephesus, which does not survive, was used as a source for later chronicles, contributing many additional details of value. Both historians became very bitter towards Justinian and his empress, Theodora. Procopius also wrote the Anekdota (the so-called Secret History), which reports on various scandals at Justinian's court. Other sources include the histories of Agathias, Menander Protector, John Malalas, the Paschal Chronicle, the chronicles of Marcellinus Comes and Victor of Tunnuna.
When Emperor Anastasius died in 518, Justin was proclaimed the new emperor, with significant help from Justinian. During Justin's reign (518-527), Justinian was the emperor's close confidant. Justinian showed much ambition, and it has been thought that he was functioning as virtual regent long before Justin made him associate emperor on 1 April 527, although there is no conclusive evidence for this. As Justin became senile near the end of his reign, Justinian became the de facto ruler. Justinian was appointed consul in 521, and later commander of the army of the east. Upon Justin I's death on 1 August 527, Justinian became the sole sovereign.
As a ruler, Justinian showed great energy. He was known as "the Emperor who never sleeps" on account of his work habits. Nevertheless, he seems to have been amenable and easy to approach. Justinian's family came from a lowly and provincial background, and therefore he had no power base in the traditional aristocracy of Constantinople. Instead, he surrounded himself with men and women of extraordinary talent, whom he selected not on the basis of aristocratic origin, but on the basis of merit. Around 525 he married Theodora, who was by profession a courtesan about 20 years his junior. Justinian would have, in earlier times, been unable to marry her because of her class, but his uncle Emperor Justin I had passed a law allowing intermarriage between social classes. Theodora would become very influential in the politics of the Empire, and later emperors would follow Justinian's precedent in marrying outside the aristocratic class. The marriage caused a scandal, but Theodora would prove to be very intelligent, "street smart", a good judge of character and Justinian's greatest supporter. Other talented individuals included Tribonian, his legal adviser; his finance ministers John the Cappadocian and Peter Barsymes, who managed to collect taxes more efficiently than any before, thereby funding Justinian's wars; and finally, his prodigiously talented general Belisarius.
Justinian's rule was not universally popular; early in his reign he almost lost his throne during the Nika riots, and a conspiracy against the emperor's life by dissatisfied businessmen was discovered as late as 562.
Justinian was struck by the plague in the early 540s, but recovered. Theodora died, perhaps of cancer, in 548, at a relatively young age, and Justinian outlived her by almost twenty years. Justinian, who had always had a keen interest in theological matters and actively participated in debates on Christian doctrine, became even more devoted to religion during the later years of his life. When he died, on the night of 13 November-14 November 565, he left no children. He was succeeded by Justin II, the son of his sister Vigilantia, who was married to Sophia, the niece of Empress Theodora. Justinian's body was entombed in a specially built mausoleum in the Church of the Holy Apostles.
Early in his reign, Justinian appointed the quaestor Tribonian to oversee this task. The first draft of the Codex Justinianus, a codification of imperial constitutions from the 2nd century onward, was issued on 7 April 529. (The final version appeared in 534.) It was followed by the Digesta (or Pandectae), a compilation of older legal texts, in 533, and by the Institutiones, a textbook explaining the principles of law. The Novellae, a collection of new laws issued during Justinian's reign, supplements the Corpus. As opposed to the rest of the corpus, the Novellae appeared in Greek, the common language of the Eastern Empire; Latin, the traditional language of the Roman Empire, was only poorly understood by most citizens of the Eastern Empire.
The Corpus forms the basis of Latin jurisprudence (including ecclesiastical Canon Law) and, for historians, provides a valuable insight into the concerns and activities of the later Roman Empire. As a collection it gathers together the many sources in which the leges (laws) and the other rules were expressed or published: proper laws, senatorial consults (senatusconsulta), imperial decrees, case law, and jurists' opinions and interpretations (responsa prudentum).
Tribonian's code ensured the survival of Roman law. It formed the basis of later Byzantine law, as expressed in the Basilika of Basil I and Leo VI the Wise. The only western province where the Justinianic code was introduced was Italy (after the conquest, by the so-called Pragmatic Sanction of 554), from where it was to pass to Western Europe in the 12th century and become the basis of much European law code. It eventually passed to Eastern Europe where it appeared in Slavic editions, and it also passed on to Russia. It remains influential to this day.
The destruction that had taken place during the revolt provided Justinian with an opportunity to tie his name to a series of splendid new buildings, most notably the architectural innovation of the domed Hagia Sophia.
In 533, Belisarius with a fleet of 92 dromons escorting 500 transports, landed at Caput Vada (modern Ras Kaboudia) in modern Tunisia with an army of about 15,000 men, as well as a number of barbarian troops. They defeated the Vandals, who were caught completely off-guard, at Ad Decimum on 14 September 533 and Tricamarum in December; Belisarius took Carthage. King Gelimer fled to Mount Pappua in Numidia, but surrendered the next spring. He was taken to Constantinople, where he was paraded in a triumph. Sardinia and Corsica, the Balearic Islands, and the stronghold Septem near Gibraltar were recovered in the same campaign.
An African prefecture was established in April 534, but it would teeter on the brink of collapse during the next 15 years, amidst warfare with the Moors and military mutinies. The area was not completely pacified until 548, but remained peaceful thereafter and enjoyed a measure of prosperity. The recovery of Africa cost the empire about 100,000 pounds of gold.
Belisarius had been recalled in the face of renewed hostilities by the Persians. Following a revolt against Byzantium in Armenia in the late 530s and possibly motivated by the pleas of Ostrogothic ambassadors, king Khosrau I broke the "Eternal Peace" and invaded Roman territory in the spring of 540. He first sacked Beroea and then Antioch (allowing the garrison of 6,000 men to leave the city), besieged Daras, and then went on to attack the small but strategically significant satellite kingdom of Lazica near the Black Sea, exacting tribute from the towns he passed along his way. He forced Justinian I to pay him 5,000 pounds of gold, plus 500 pounds of gold more each year.
Belisarius arrived in the East in 541, but, after some success, was again recalled to Constantinople in 542. The reasons for his withdrawal are not known, but it may have been instigated by rumours of disloyalty on behalf of the general reaching the court. The outbreak of the plague caused a lull in the fighting during the year 543. The following year Khosrau defeated a Byzantine army of 30,000 men, but unsuccessfully besieged the major city of Edessa. Both parties made little headway, and in 545 a truce was agreed upon for the southern part of the Roman-Persian frontier. After that the Lazic War in the North continued for several years, until a second truce in 557, followed by a Fifty Years' Peace in 562. Under its terms, the Persians agreed to abandon Lazica in exchange for an annual tribute of 400 or 500 pounds of gold (30,000 solidi) to be paid by the Romans.
During Justinian's reign, the Balkans suffered from several incursions by the Turkic and Slavic peoples who lived north of the Danube. Here, Justinian resorted mainly to a combination of diplomacy and a system of defensive works. In 559 a particularly dangerous invasion of Sklavinoi and Kutrigurs under their khan Zabergan threatened Constantinople, but they were repulsed by the aged general Belisarius.
Justinian's ambition to restore the Roman Empire to its former glory was only partly realised. In the West, the brilliant early military successes of the 530s were followed by years of stagnation. The dragging war with the Goths was a disaster for Italy, even though its long-lasting effects may have been less severe than is sometimes thought. The heavy taxes that the administration imposed upon its population were deeply resented. While the final victory in Italy and the conquest of the coast of southern Spain significantly enlarged the area over which Byzantium could project its power and influence, and while they must have contributed to the empire's prestige, most of the conquests proved ephemeral. The greater part of Italy would be lost to the invading Lombards three years after Justinian's death (568), and within a century and a half Africa and Spain were forever lost for the empire.
Events of the later years of the reign showed that Constantinople itself was not safe from barbarian incursions from the north, and even the relatively benevolent historian Menander Protector felt the need to explain the emperor's failure to protect the capital from the weakness of his body in his old age. In his efforts to renew the old Roman Empire, Justinian dangerously stretched the resources of the Eastern Empire while failing to take into account the changed realities of 6th-century Europe. Paradoxically, Justinian's military successes probably contributed to the empire's subsequent decline.
As with his secular administration, despotism appeared also in the emperor's ecclesiastical policy. He regulated everything, both in religion and in law.
At the very beginning of his reign, he deemed it proper to promulgate by law the Church's belief in the Trinity and the Incarnation; and to threaten all heretics with the appropriate penalties; whereas he subsequently declared that he intended to deprive all disturbers of orthodoxy of the opportunity for such offense by due process of law. He made the Nicaeno-Constantinopolitan creed the sole symbol of the Church, and accorded legal force to the canons of the four ecumenical councils. The bishops in attendance at the Second Council of Constantinople in 553 recognized that nothing could be done in the Church contrary to the emperor's will and command; while, on his side, the emperor, in the case of the Patriarch Anthimus, reinforced the ban of the Church with temporal proscription. Justinian protected the purity of the church by suppressing heretics. He neglected no opportunity for securing the rights of the Church and clergy, for protecting and extending monasticism. He granted the monks the right to inherit property from private citizens and the right to receive solemnia or annual gifts from the imperial treasury or from the taxes of certain provinces and he prohibited lay confiscation on monastic estates.
Although the despotic character of his measures is contrary to modern sensibilities, he was indeed a "nursing father" of the Church. Both the Codex and the Novellae contain many enactments regarding donations, foundations, and the administration of ecclesiastical property; election and rights of bishops, priests and abbots; monastic life, residential obligations of the clergy, conduct of divine service, episcopal jurisdiction, etc. Justinian also rebuilt the Church of Hagia Sophia (which cost 20,000 pounds of gold), the original site having been destroyed during the Nika riots. The new Hagia Sophia, with its numerous chapels and shrines, gilded octagonal dome, and mosaics, became the centre and most visible monument of Eastern Orthodoxy in Constantinople.
Justinian entered the arena of ecclesiastical statecraft shortly after his uncle's accession in 518, and put an end to the Monophysite schism that had prevailed between Rome and Byzantium since 483. The recognition of the Roman see as the highest ecclesiastical authority remained the cornerstone of his Western policy. Offensive as it was to many in the East, nonetheless Justinian felt himself entirely free to take a Despotic stance toward the popes such as Silverius and Vigilius. While no compromise could ever be accepted by the dogmatic wing of the church, his sincere efforts at reconciliation gained him the approval of the major body of the church. A signal proof was his attitude in the Theopaschite controversy. At the outset he was of the opinion that the question turned on a quibble of words. By degrees, however, Justinian came to understand that the formula at issue not only appeared orthodox, but might also serve as a conciliatory measure toward the Monophysites, and he made a vain attempt to do this in the religious conference with the followers of Severus of Antioch, in 533.
Again, Justinian moved toward compromise in the religious edict of 15 March 533, and congratulated himself that Pope John II admitted the orthodoxy of the imperial confession. The serious blunder that he had made at the beginning by abetting a severe persecution of the Monophysite bishops and monks and thereby embittering the population of vast regions and provinces, he remedied eventually. His constant aim now remained to win over the Monophysites, yet not to surrender the Chalcedonian faith. For many at court, he did not go far enough: Theodora especially would have rejoiced to see the Monophysites favored unreservedly. Justinian, however, felt restrained by the complications that would have ensued with the West. But in the condemnation of the Three Chapters Justinian tried to satisfy both the East and the West, but succeeded in satisfying neither. Although the pope assented to the condemnation, the West believed that the emperor had acted contrary to the decrees of Chalcedon. Though many delegates emerged in the East subservient to Justinian, many, especially the Monophysites, remained unsatisfied; all the more bitter for him because during his last years he took an even greater interest in theological matters.
Justinian's religious policy reflected the imperial conviction that the unity of the Empire unconditionally presupposed unity of faith; and it appeared to him obvious that this faith could be only the Orthodox (Nicaean). Those of a different belief had to recognize that the process of consolidation, which imperial legislation had effected from the time of Constantius II, would now vigorously continue. The Codex contained two statutes which decreed the total destruction of paganism, even in private life; these provisions were zealously enforced. Contemporary sources (John Malalas, Theophanes, John of Ephesus) tell of severe persecutions, even of men in high position.
Perhaps the most noteworthy event occurred in 529 when the Neoplatonic Academy of Athens was placed under state control by order of Justinian, effectively strangling this training-school for Hellenism. Paganism was actively suppressed. In Asia Minor alone, John of Ephesus claimed to have converted 70,000 pagans. Other peoples also accepted Christianity: the Heruli, the Huns dwelling near the Don, the Abasgi, and the Tzani in Caucasia.
The worship of Amun at Augila in the Libyan desert was abolished; and so were the remnants of the worship of Isis on the island of Philae, at the first cataract of the Nile. The Presbyter Julian and the Bishop Longinus conducted a mission among the Nabataeans, and Justinian attempted to strengthen Christianity in Yemen by despatching a bishop from Egypt.
The Jews, too, had to suffer; for not only did the authorities restrict their civil rights, and threaten their religious privileges, but the emperor interfered in the internal affairs of the synagogue, and forbade, for instance, the use of the Hebrew language in divine worship. The recalcitrant were threatened with corporal penalties, exile, and loss of property. The Jews at Borium, not far from Syrtis Major, who resisted Belisarius in his Vandal campaign, had to embrace Christianity; their synagogue became a church.
The emperor had much trouble with the Samaritans, finding them refractory to Christianity and repeatedly in insurrection. He opposed them with rigorous edicts, but yet could not prevent hostilities towards Christians from taking place in Samaria toward the close of his reign. The consistency of Justinian's policy meant that the Manicheans too suffered severe persecution, experiencing both exile and threat of capital punishment. At Constantinople, on one occasion, not a few Manicheans, after strict inquisition, were executed in the emperor's very presence: some by burning, others by drowning.
Justinian also strengthened the borders of the empire from Africa to the East through the construction of fortifications, and ensured Constantinople of its water supply through construction of underground cisterns. During his reign a bridge over the river Sangarius was built, securing a major trade route. Furthermore, Justinian restored cities damaged by earthquake or war and built a new city near his place of birth called Justiniana Prima, which was intended to replace Thessalonica as the political and religious center of the Illyricum. In Justinian's era, and partly under his patronage, Byzantine culture produced noteworthy historians, including Procopius and Agathias, and poets such as Paul the Silentiary and Romanus the Melodist flourished during his reign. On the other hand, centers of learning as the Platonic Academy in Athens and the famous law school of Beirut lost their importance during his reign. Despite Justinian's passion for the glorious Roman past, aother ancient institution, the Roman consulate, was allowed to lapse after 541.
At the start of Justinian I's reign he had inherited a surplus 28,800,000 solidi (400,000 pounds of gold) in the imperial treasury from Anastasius I and Justin I. Under Justinian's rule, measures were taken to counter corruption in the provinces and to make tax collection more efficient. Greater administrative power was given to both the leaders of the prefectures and of the provinces, while power was taken away from the vicariates of the dioceses, of which a number were abolished. The overall trend was towards a simplification of administrative infrastructure. According to Brown (1971), the increased professionalisation of tax collection did much to destroy the traditional structures of provincial life, as it weakened the autonomy of the town councils in the Greek towns. It has been estimated that before Justinian I's reconquests the state had an annual revenue of 5,000,000 solidi in AD 530, but after his reconquests, the annual revenue was increased to 6,000,000 solidi in AD 550.
Throughout Justinian's reign, the cities and villages of the East prospered, although Antioch was struck by two earthquakes (526, 528) and sacked and evacuated by the Persians (540). Justinian had the city rebuilt, but on a slightly smaller scale.
Despite all these measures, the empire suffered several major setbacks in the course of the 6th century. The first one was the plague, which lasted from 541 to 543 and, by decimating the empire's population, probably created a scarcity of labour and a rising of wages. The lack of manpower also led to a significant increase in the number of "barbarians" in the Byzantine armies after the early 540s. The protracted war in Italy and the wars with the Persians themselves laid a heavy burden on the empire's resources, and Justinian was criticized for curtailing the government-run post service, which he limited to only one eastern route of military importance.