As far as the advantage of the people is concerned, St. Anselm says, that the sacred womb of Mary having been made the way of salvation for sinners, sinners cannot but be converted and saved by discourses in praise of Mary.[15] If the assertion is true and incontrovertible, as I believe it to be, and as I shall prove, in the fifth chapter of this book, that all graces are dispensed by the hand of Mary alone, and that all those who are saved, are saved solely by means of this divine mother; it may be said, as a necessary consequence, that the salvation of all depends upon preaching Mary, and confidence in her intercession. We know that St. Bernard of Sienna sanctified Italy; St. Dominic converted many provinces; St. Louis Bertrand, in all his sermons, never failed to exhort his hearers to practise devotion towards Mary; and many others also have done the same. I find that Father Paul Segneri, the younger, a celebrated missionary, in every mission preached a sermon on devotion to Mary, and this he called his favorite sermon. And we can attest, in all truth, that in our missions, where we have an invariable rule not to omit the sermon on our Lady, no discourse is so profitable to the people, or excites more compunction among them, than that on the mercy of Mary. I say _on the mercy of Mary_: for St. Bernard says, we may praise her humility, and marvel at her virginity; but being poor sinners, we are more pleased and attracted by hearing of her mercy; for to this we more affectionately cling, this we more often remember and invoke.[16] Therefore in this little book, leaving to other authors the description of the other merits of Mary, I have confined myself especially to treating of her great compassion and her powerful intercession; having collected, as far as possible, with the labor of years, all that the holy Fathers and the most celebrated authors have said of the mercy and power of Mary; and because these attributes of the blessed Virgin are wonderfully set forth in the great prayer of the _Salve Regina_, approved by the Church, and required by her to be recited the greater part of the year by all the clergy, secular and regular, I have undertaken, in the first place, to explain in separate discourses this most devout prayer. Besides this, I believed it would be acceptable to the servants of Mary, if I added discourses on her principal festivals and upon the virtues of our divine mother, placing at the conclusion of them the practices of devotion most in use among her servants, and approved by the Church.