It is scarcely possible that the eyes of contemporaries should discover in the public felicity the latent causes of decay and corruption. This long peace, and the uniform government of the Romans, introduced a slow and secret poison into the vitals of the empire. The minds of men were gradually reduced to the same level, the fire of genius was extinguished, and even the military spirit evaporated.

The mixture of Sarmatic and German blood had contributed to improve the features of the Alani, to whiten their swarthy complexions, and to tinge their hair with a yellowish cast, which is seldom found in the Tartar race.

But the wisdom and authority of the legislator are seldom victorious in a contest with the vigilant dexterity of private interest.

In the second century of the Christian era, the Empire of Rome comprehended the fairest part of the earth, and the most civilised portion of mankind. The frontiers of that extensive monarchy were guarded by ancient renown and disciplined valour. The gentle but powerful influence of laws and manners had gradually cemented the union of the provinces. Their peaceful inhabitants enjoyed and abused the advantages of wealth and luxury.

The grateful applause of the clergy has consecrated the memory of a prince, who indulged their passions and promoted their interest. Constantine gave them security, wealth, honours, and revenge; and the support of the orthodox faith was considered as the most sacred and important duty of the civil magistrate. The edict of Milan, the great charter of toleration, had confirmed to each individual of the Roman world the privilege of choosing and professing his own religion.

We improve ourselves by victories over ourselves. There must be contest, and we must win.

The virtue of Marcus Aurelius Antoninus was of a severer and more laborious kind. It was the well-earned harvest of many a learned conference, of many a patient lecture, and many a midnight lucubration. At the age of twelve years, he embraced the rigid system of the Stoics, which taught him to submit his body to his mind, his passions to his reason; to consider virtue as the only good, vice as the only evil, all things external as things indifferent.