Though a fierce persecutor of the deluded followers of Mazdak, Chosroes admitted and practised, to some extent, the principles of toleration. On becoming king, he laid it down as a rule of his government that the actions of men alone, and not their thoughts, were subject to his authority. He was therefore bound not to persecute opinion; and we may suppose that in his proceedings against the Mazdakites he intended to punish their crimes rather than their tenets. Towards the Christians, who abounded in his empire, he certainly showed himself, upon the whole, mild and moderate. He married a Christian wife, and allowed her to retain her religion. When one of his sons became a Christian, the only punishment which he inflicted on him was to confine him to the palace. He augumented the number of the Christians in his dominions by the colonies which he brought in from abroad. He allowed to his Christian subjects the free exercise of their religion, permitted them to build churches, elect bishops, and conduct services at their pleasure, and even suffered them to bury their dead, though such pollution of the earth was accounted sacrilegious by the Zoroastrians. No unworthy compliances with the established cult were required of them. Proselytism, however, was not allowed; and all Christian sects were perhaps not viewed with equal favor. Chosroes, at any rate, is accused of persecuting the Catholics and the Monophysites, and compelling them to join the Nestorians, who formed the predominant sect in his dominions. Conformity, however, in things outward, is compatible with a wide diversity of opinion; and Chosroes, while he disliked differences of practice, seems certainly to have encouraged, at least in his earlier years, a freedom of discussion in religious matters which must have tended to shake the hereditary faith of his subjects. He also gave on one occasion a very remarkable indication of liberal and tolerant views. When he made his first peace with Rome, the article on which he insisted the most was one whereby the free profession of their known opinions and tenets in their own country was secured to the seven Grecian sages who had found at his court, in their hour of need, a refuge from persecution.