8 Those same things are, in fact, the most important and the most admirable of Christianity, the things through which the world was renewed and filled with the fruits of truth, justice, and peace. And it is remarkable how well adapted to every kind of mind, however unskilled, is the manner in which these things are proposed to us in the Rosary. They are proposed less as truths or doctrines to be speculated upon than as present facts to be seen and perceived. Thus presented, with the circumstances of place, time, and persons, these Mysteries produce the most living effect; and this without the slightest effort of imagination; for they are treated as things learnt and engraven in the heart from infancy. Thus, hardly is a Mystery named but the pious soul goes through it with ease of thought and quickness of feeling, and gathers therefrom, by the gift of Mary, abundance of the food of Heaven. And yet another title of joy and of acceptation in her eyes do our crowns of prayer acquire. For every time that we look once more with devotional remembrance upon these Mysteries we give her a sign of the gratitude of our hearts; we prove to her that we cannot often enough call to mind the blessings of her unwearied charity in the work of our salvation. At such recollections, practised by us with the frequency of love in her presence, who may express, who may even conceive, what ever-new joys overflow her ever-blessed soul, and what tender affections arise therein, of mercy and of a mother's love! Besides these recollections, moreover, as the sacred Mysteries pass by they cause our prayers to be transformed into impulses of entreaty that have an indescribable power over the heart of Mary. Yes, we fly to thee, we miserable children of Eve, O holy Mother of God. To thee we lift our prayers, for thou art the Mediatrix, powerful at once and pitiful, of our salvation. Oh, by the sweetness of the joys that came to thee from thy Son Jesus, by thy participation in His ineffable sorrows, by the splendours of His glory shining in thee, we instantly beseech thee, listen, be pitiful, hear us, unworthy though we be!
Source: Iucunda Semper Expectatione (Vatican.va)