"For us, traditional liturgy is represented by the Roman Breviary of Urban VIII., a book which constitutes for us a Vulgate of the Roman Office.... The thing which renders this Vulgate of 1632 precious to us is that, thanks to the wisdom of Paul IV., Pius V., and Clement VIII., the differences between it and the Breviary of the Roman Curia of the thirteenth century are mere differences of detail: the substantial identity of the two is beyond dispute. The Breviary of Urban VIII. is the lineal descendant of the Breviary of Innocent III. And the latter in its turn is the legitimate descendant of the Roman canonical Office, as it was celebrated in the basilica of St. Peter at the end of the eighth century, such as it had gradually come to be in the course of the seventh and eighth centuries, a genuinely Roman combination of various elements, some of them Roman and some not, but of which some, at all events, go back to the very beginnings of the Catholic religion" (Battifol, _op. cit._, p. 353). CHAPTER III. EXCELLENCE OF THE ROMAN BREVIARY--THE ESTEEM WHICH WE SHOULD HAVE FOR THE BOOK ITSELF. The Roman Breviary is excellent, firstly, in itself; and, secondly, in comparison with all other breviaries. It is excellent in itself, in its antiquity, for in substance it goes back to the first ages of Christianity. It is excellent, in its author, for it has been constructed and imposed as an obligation by the supreme pontiffs, the vicars of Jesus Christ, the supreme pastors of the whole Church. It is excellent, in its perpetuity, for it has come down to us through all the ages without fundamental change. It is excellent in its universality, in its doctrine, in the efficacy of its prayer, the official prayer of the Church. It is excellent in the matter of which it is built up, being composed of Sacred Scripture, the words of the Fathers and the lives of God's saints. It is excellent in its style and in its form for the parts of each hour; the antiphons, psalms, canticles, hymns, versicles, follow one another in splendid harmony.