The title of the Breviary is, BREVIARIUM ROMANUM EX DECRETO SACROSANCTI CONCILII TRIDENTINI RESTITUTUM S. PII V. PONTIFICIS MAXIMI JUSSU EDITUM, ALIORUMQUE PONTIFICIUM, CURA RECOGNITUM PII PAPAE X., AUCTORITATE REFORMATUM. This work is divided into four parts, the first part being called _Pars Hiemalis_, the winter part; the second part, _Pars Verna_, the spring part; the third part, _Pars Aestiva_, the summer part; and the fourth part, the _Pars Autumnalis_, the autumn part. The Church, guided by the Holy Ghost, has drawn up these volumes of liturgical prayer, so that for each season, even for each day, her official prayer may be suited to the time, to different degrees of solemnity and of rite, and so that it may be fixed and determined, yet having great beauty in its wonderful unity and variety. Hence, nothing in her official prayer is left to chance, nothing is left to the selection or caprice of the individual who recites this prayer; all is foreseen, everything is in order, every tittle has a reason for its existence and its place in the liturgy, and represents the end and the intentions of the Church. For, every part of the Roman Breviary is stamped with the wisdom, the zeal and the piety of the Church, which presents it, as an offering all suitable for and worthy of God's honour and glory. Considering, then, the Breviary as a liturgical book, we find that the Divine Office has four general divisions, corresponding to the divisions of our Lord's life. First, from Advent to Septuagesima; second, from Septuagesima to Easter; third, from Easter to Pentecost; fourth, from Pentecost to Advent. These divisions correspond also to the divisions of the year, winter, spring, summer and autumn. The end and object of the Office are to invite us to join in the infinite praise which the Son of God rendered to His Father during His life, and which He renders still in Heaven and in the Tabernacle. "_Domine in unione illius divinae intentionis qua ipse in terris laudes Deo persolvisti, has tibi Horas persolvo,_" "O Lord, in union with that divine intention wherewith Thou whilst here on earth Thyself didst praise God, I offer these Hours to Thee." The life of Christ is divided into four principal divisions: first, His birth, circumcision, epiphany, presentation; second, His public life and His death; third, His resurrection, ascension, and descent of the Holy Ghost; fourth, His mystic life in the Church and in Heaven. Hence arise the four general divisions of the Divine Office:-- _First General Division which begins the Church's year_. From Advent to Septuagesima:--The birth of the Saviour preceded by His life in Mary's womb, and by the four weeks of Advent, representing (it is said) the passing of the four thousand years, and embracing the mysteries of the Holy Infancy, Circumcision, Epiphany, Holy Name of Jesus, and the Presentation.