The Eastern church thus formally and in the most solemn manner recorded its separate and independent discipline on this point, and refused to be bound by the sacerdotalism of Rome. It thus maintained the customs transmitted from the early period, when asceticism had commenced to show itself, but it shrank from carrying out the principles involved to their ultimate result, as was sternly attempted by the inexorable logic of Rome. The system thus laid down was permanent, for throughout the East the Quinisext was received unquestioningly as a general council, and its decrees were authoritative and unalterable. It is true that in the confusion of the two following centuries a laxity of practice gradually crept in, by which those who desired to marry were admitted to holy orders while single, and were granted two years after ordination during which they were at liberty to take wives, but this was acknowledged to be an abuse, and about the year 900 it was formally prohibited by a constitution of Leo the Philosopher.[177] Thus restored, the Greek church has preserved its early traditions unaltered to the present day. Marriage in orders is not permitted, nor are digami admissible, but the lower grades of the clergy are free to marry, nor are they separated from their wives when promoted to the sacred functions of the diaconate or priesthood. The bishops are selected from the regular clergy or monks, and, being bound by the vow of chastity, are of course unmarried and unable to marry. Thus the legislation of Justinian is practically transmitted to the nineteenth century. Even this restriction on the freedom of marriage renders it difficult to preserve the purity of the priesthood, and the Greek church, like the Latin, is forced occasionally to renew the Nicene prohibition against the residence of suspected women.[178] The strongly marked hereditary tendency, which is so distinguishing a characteristic of mediæval European institutions has led, in Russia at least, since the time of Peter the Great, to the customary transmission of the priesthood, and even of individual churches, from father to son, thus creating a sacerdotal caste. To such an extent has this been carried that marriage is obligatory on the parish priest, and custom requires that the wife shall be the daughter of a priest. Some of the results of this are to be seen in a law of 1867, forbidding for the future the aspirant to a cure from marrying the daughter of his predecessor or undertaking to support the family of the late incumbent as a condition precedent to obtaining the preferment. It shows how entirely the duties of the clergy had been lost in the sense of property and hereditary right attaching to benefices, leading inevitably to the neglect or perfunctory performance of ecclesiastical duties.[179] We shall see hereafter how narrowly the Latin church escaped a similar transformation, and how prolonged was the struggle to avoid it. * * * * *