Justinian was only a peasant by birth, but he had been well educated and took a keen interest not only in questions of law and finance that concerned the government but in theology, music, and architecture. In his manner to his subjects he was friendly though dignified, but there was something unsympathetic in his nature that prevented him from becoming popular. His courtiers regarded his industry with awe, but some professed to believe that he could not spend so many midnight hours at work unless he were an evil spirit not requiring sleep. One writer says that ‘no one ever remembered him young’: yet this serious prince married for love a beautiful actress, Theodora, and dared, in the face of general indignation, to make her his empress. An historian of the time says of Theodora, ‘it were impossible for mere man to describe her comeliness in words or imitate it in art’; yet she was no doll, but took a very definite share in the government, extorting admiration by her dignity even from those who had pretended to despise her. Justinian’s chief passion was for building, and he spent a great part of his revenue in erecting bridges, baths, forts, and palaces. Most famous of all the architecture of his time was Saint Sophia, ‘the Church of the Holy Wisdom’, that after Constantinople passed into the hands of the Turks became a mosque. It is not, however, for Saint Sophia that Justinian is chiefly remembered but for the _Corpus Juris Civilis_, literally ‘the body of Civil Law’, that he published in order that his subjects might know what the Roman law really was. The _Corpus Juris Civilis_ consisted of three parts--the ‘Code’, a collection of decrees made by various emperors; next the ‘Digest’, the decisions of eminent lawyers; and thirdly the ‘Institutes’, an explanation of the principles of Roman law. ‘After thirteen centuries,’ says a modern writer, ‘it stands unsurpassed as a treasury of legal knowledge;’ and all through the Middle Ages men were to look to it for inspiration. Thus it was on the _Corpus Juris Civilis_ that ecclesiastical lawyers based the Canon law that gave to the Pope an emperor’s power over the Church. Justinian worked for the progress of the world when he codified Roman law. It was unfortunate that military ambition led him to exhaust his treasury and overtax his subjects, in order that he might establish his rule over the whole of Europe like Theodosius and Constantine. Besides carrying on an almost continuous war with the King of Persia, he sent an army and fleet under an able general, Belisarius, to fight against the Vandals in North Africa; and so successful was this campaign that Justinian became master of the whole coast-line, and even of a part of southern Spain. This gave him command of the Mediterranean, and he at once determined to overthrow the feeble descendants of Theodoric, and to restore the imperial dominion over Italy in deed, not as it had been from the time of Odoacer merely in name.