And, besides the liberty of worship, the liberty of thought and of expression, which was the supreme attainment of Roman civilisation, was in peril. The new religion, unlike that which was disappearing, claimed to dictate the opinions as well as the actions of men, and its teachers stigmatised as an atrocious crime the free expression of every opinion on religious matters diverging from their own. Of all the forms of liberty, it was this which lasted the longest, and was the most dearly prized. Even after Constantine, the Pagans Libanius, Themistius, Symmachus, and Sallust enforced their views with a freedom that contrasts remarkably with the restraints imposed upon their worship, and the beautiful friendships of St. Basil and Libanius, of Synesius and Hypatia, are among the most touching episodes of their time. But though the traditions of Pagan freedom, and the true catholicism of Justin Martyr and Origen, lingered long, it was inevitable that error, being deemed criminal, should be made penal. The dogmatism of Athanasius and Augustine, the increasing power of the clergy, and the fanaticism of the monks, hastened the end. The suppression of all religions but one by Theodosius, the murder of Hypatia at Alexandria by the monks of Cyril, and the closing by Justinian of the schools of Athens, are the three events which mark the decisive overthrow of intellectual freedom. A thousand years had rolled away before that freedom was in part restored. The considerations I have briefly enumerated should not in the smallest degree detract from the admiration due to the surpassing courage, to the pure, touching, and sacred virtues of the Christian martyrs; but they in some degree palliate the conduct of the persecutors, among whom must be included one emperor, who was probably, on the whole, the best and most humane sovereign who has ever sat upon a throne, and at least two others, who were considerably above the average of virtue. When, combined with the indifference to human suffering, the thirst for blood, which the spectacles of the amphitheatre had engendered, they assuredly make the persecutions abundantly explicable. They show that if it can be proved that Christian persecutions sprang from the doctrine of exclusive salvation, the fact that the Roman Pagans, who did not hold that doctrine, also persecuted, need not cause the slightest perplexity. That the persecutions of Christianity by the Roman emperors, severe as they undoubtedly were, were not of such a continuous nature as wholly to counteract the vast moral, social, and intellectual agencies that were favourable to its spread, a few dates will show.