7 A soul that shall devoutly repeat these prayers, that shall ponder with faith these mysteries, will, without doubt, be filled with wonder at the Divine purposes in this great Virgin and in the work of the restoration of mankind. Doubtless, this soul, moved by the warmth of love for her and of confidence, will desire to take refuge upon her breast, as was the sweet feeling of St. Bernard: "Remember, O most pious Virgin Mary, that never was it heard that any who fled to thy protection, called upon thy help, and sought thy intercession, was left forsaken." But the fruits of the Rosary appear likewise, and with equal greatness, in the turning with mercy of the heart of the Mother of God towards us. How sweet a happiness must it be for her to see us all intent upon the task of weaving crowns for her of righteous prayers and lovely praises! And if, indeed, by those prayers we desire to render to God the glory which is His due; if we protest that we seek nothing whatsoever except the fulfilment in us of His holy will; if we magnify His goodness and graciousness; if we call Him Our Father; if we, being most unworthy, yet entreat of Him His best blessings - Oh, how shall Mary in all these things rejoice! How shall she magnify the Lord! There is no language so fit to lead us to the majesty of God as the language of the Lord's Prayer. Furthermore, to each of these things for which we pray, things that are righteous and are ordered, and are in harmony with Christian faith, hope, and charity, is added a special joy for the Blessed Virgin. With our voices she seems to hear also the voice of her Divine Son, Who with His own mouth taught us this prayer, and by His own authority commanded it, saying: "You shall pray thus." And seeing how we observe that command, saying our Rosary, she will bend towards us with the more loving solicitude; and the mystical crowns we offer her will be to her welcome, and to us fruitful of graces. And of this generosity of Mary to our supplications we have no slight pledge in the very nature of a practice that has the power to help us in praying well. In many ways, indeed, is man apt, by his frailty, to allow his thoughts to wander from God and to let his purpose go astray. But the Rosary, if rightly considered, will be found to have in itself special virtues, whether for producing and continuing a state of recollection, or for touching the conscience for its healing, or for lifting up the soul. As all men know, it is composed of two parts, distinct but inseparable-the meditation of the Mysteries and the recitation of the prayers. It is thus a kind of prayer that requires not only some raising of the soul to God, but also a particular and explicit attention, so that by reflection upon the things to be contemplated, impulses and resolutions may follow for the reformation and sanctification of life.
Source: Iucunda Semper Expectatione (Vatican.va)