This change created a new phase in the Roman Empire. The gradual progress of this change has led some writers to date the commencement of the Byzantine Empire as early as the reigns of Zeno and Anastasius, and others to descend so late as the times of Maurice and Heraclius.[43] But as the Byzantine Empire was only a continuation of the Roman government under a reformed system, it seems most correct to date its commencement from the period when the new social and political modifications produced a visible effect on the fate of the Eastern Empire. This period is marked by the accession of Leo the Isaurian.

The administrative system of Rome, as modified by Constantine, continued in operation, though subjected to frequent reforms, until Constantinople was stormed by the crusaders, and the Greek church enslaved by papal domination. The general council of Nicæa, and the dedication of the imperial city, with their concomitant legislative, administrative, and judicial institutions, engendered a succession of political measures, whose direct relations were uninterrupted until terminated by foreign conquest. The government of Great Britain has undergone greater changes during the last three centuries than that of the Eastern Empire during the nine centuries which elapsed from the foundation of Constantinople in 330, to its conquest in 1204.

Yet Leo III has strong claims to be regarded as the first of a new series of emperors. He was the founder of a dynasty, the saviour of Constantinople, and the reformer of the church and state. He was the first Christian sovereign who arrested the torrent of Mohammedan conquest; he improved the condition of his subjects; he attempted to purify their religion from the superstitious reminiscences of Hellenism, with which it was still debased, and to stop the development of a quasi-idolatry in the orthodox church. Nothing can prove more decidedly the right of his empire to assume a new name than the contrast presented by the condition of its inhabitants to that of the subjects of the preceding dynasty. Under the successors of Heraclius, the Roman Empire presents the spectacle of a declining society, and its thinly peopled provinces were exposed to the intrusion of foreign colonists and hostile invaders. But, under Leo, society offers an aspect of improvement and prosperity; the old population revives from its lethargy, and soon increases, both in number and strength, to such a degree as to drive back all intruders on its territories. In the records of human civilisation, Leo the Isaurian must always occupy a high position, as a type of what the central power in a state can effect even in a declining empire.

Thus after the accession of Leo III, a new condition of society is apparent; and though many old political evils continued to exist, it becomes evident that a greater degree of personal liberty, as well as greater security for property, was henceforth guaranteed to the mass of the inhabitants of the empire. Indeed, no other government of which history has preserved the records, unless it be that of China, has secured equal advantages to its subjects for so long a period. The empires of the caliphs and of Charlemagne, though historians have celebrated their praises loudly, cannot, in their best days, compete with the administration organised by Leo on this point; and both sank into ruin while the Byzantine Empire continued to flourish in full vigour. It must be confessed that eminent historians present a totally different picture of Byzantine history to their readers. Voltaire speaks of it as a worthless repertory of declamation and miracles, disgraceful to the human mind. Even the sagacious Gibbon,[g] after enumerating with just pride the extent of his labours, adds: “From these considerations, I should have abandoned without regret the Greek slaves and their servile historians, had I not reflected that the fate of the Byzantine monarchy is passively connected with the most splendid and important revolutions which have changed the state of the world.”

The history of the Byzantine Empire divides itself into three periods, strongly marked by distinct characteristics.

The first period commences with the reign of Leo III in 716, and terminates with that of Michael III in 867. It comprises the whole history of the predominance of the iconoclasts in the established church, and of the reaction which reinstated the orthodox in power. It opens with the efforts by which Leo and the people of the empire saved the Roman law and the Christian religion from the conquering Saracens. It embraces a long and violent struggle between the government and the people, the emperors seeking to increase the central power by annihilating every local franchise, and even the right of private opinion, among their subjects. The contest concerning image worship, from the prevalence of ecclesiastical ideas, became the expression of this struggle. Its object was as much to consolidate the supremacy of the imperial authority, as to purify the practice of the church. The emperors wished to constitute themselves the fountains of ecclesiastical as completely as of civil legislation.

The long and bloody wars of this period, and the vehement character of the sovereigns who filled the throne, attract the attention of those who love to dwell on the romantic facts of history. Unfortunately, the biographical sketches and individual characters of the heroes of these ages lie concealed in the dullest chronicles. But the true historical feature of this memorable period is the aspect of a declining empire, saved by the moral vigour developed in society, and of the central authority struggling to restore national prosperity. Never was such a succession of able sovereigns seen following one another on any other throne. The stern iconoclast, Leo the Isaurian, opens the line as the second founder of the Eastern Empire. His son, the fiery Constantine, who was said to prefer the odour of the stable to the perfumes of his palaces, replanted the Christian standards on the banks of the Euphrates. Irene, the beautiful Athenian, presents a strange combination of talent, heartlessness, and orthodoxy. The finance minister, Nicephorus, perishes on the field of battle like an old Roman. The Armenian Leo falls at the altar of his private chapel, murdered as he is singing psalms with his deep voice, before day-dawn. Michael the Amorian, who stammered Greek with his native Phrygian accent, became the founder of an imperial dynasty, destined to be extinguished by a Slavonian groom. The accomplished Theophilus lived in an age of romance, both in action and literature. His son, Michael, the last of the Amorian family, was the only contemptible prince of this period, and he was certainly the most despicable buffoon that ever occupied a throne.

A Byzantine Peasant

The second period commences with the reign of Basil I in 867, and terminates with the deposition of Michael VI in 1057. During two centuries the imperial sceptre was retained by members of the Basilian family, or held by those who shared their throne as guardians or husbands. At this time the Byzantine Empire attained its highest pitch of external power and internal prosperity. The Saracens were pursued into the plains of Syria. Antioch and Edessa were reunited to the empire. The Bulgarian monarchy was conquered, and the Danube became again the northern frontier. The Slavonians in Greece were almost exterminated. Byzantine commerce filled the whole Mediterranean, and legitimated the claim of the emperor of Constantinople to the title of “autocrat of the Mediterranean Sea.” But the real glory of this period consists in the power of the law. Respect for the administration of justice pervaded society more generally than it had ever done at any preceding period of the history of the world—a fact which seems to have been completely overlooked by some of our greatest historians, though it is all-important in the history of human civilisation.