What was written among the Pagans in opposition to these views was not much, but it is worthy of notice, as illustrating the tendency that had arisen. Musonius Rufus distinctly and emphatically asserted that no union of the sexes other than marriage was permissible.(655) Dion Chrysostom desired prostitution to be suppressed by law. The ascetic notion of the impurity even of marriage may be faintly traced. Apollonius of Tyana lived, on this ground, a life of celibacy.(656) Zenobia refused to cohabit with her husband, except so far as was necessary for the production of an heir.(657) Hypatia is said, like many Christian saints, to have maintained the position of a virgin wife.(658) The belief in the impurity of all corporeal things, and in the duty of rising above them, was in the third century strenuously enforced.(659) Marcus Aurelius and Julian were both admirable representatives of the best Pagan spirit of their time. Each of them lost his wife early, each was eulogised by his biographer for the virtue he manifested after her death; but there is a curious and characteristic difference in the forms which that virtue assumed. Marcus Aurelius, we are told, did not wish to bring into his house a stepmother to rule over his children, and accordingly took a concubine.(660) Julian ever after lived in perfect continence.(661) The foregoing facts, which I have given in the most condensed form, and almost unaccompanied by criticism or by comment, will be sufficient, I hope, to exhibit the state of feeling of the Romans on this subject, and also the direction in which that feeling was being modified. Those who are familiar with this order of studies will readily understand that it is impossible to mark out with precision the chronology of a moral sentiment; but there can be no question that in the latter days of the Roman Empire the perceptions of men on this subject became more subtle and more refined than they had previously been, and it is equally certain that the Oriental philosophies which had superseded Stoicism largely influenced the change. Christianity soon constituted itself the representative of the new tendency. It regarded purity as the most important of all virtues, and it strained to the utmost all the vast agencies it possessed, to enforce it. In the legislation of the first Christian emperors we find many traces of a fiery zeal. Panders were condemned to have molten lead poured down their throats. In the case of rape, not only the ravisher, but even the injured person, if she consented to the act, was put to death.(662) A great service was done to the cause both of purity and of philanthropy, by a law which permitted actresses, on receiving baptism, to abandon their profession, which had been made a form of slavery, and was virtually a slavery to vice.(663) Certain musical girls, who were accustomed to sing or play at the banquets of the rich, and who were regarded with extreme