A young nobleman was reading one day, while at sea, an obscene book, in which he took great pleasure. A religious said to him: "Now come, would you give something to our Lady?" "Yes," he answered; and the other said, "I wish that, for love of the holy Virgin, you would tear that book in pieces and cast it into the sea." "Here it is, Father," said the young man. "No," said the religious, "I wish that you yourself would make this offering to Mary." He did so, and when he returned to Genoa, his native place, the Mother of God so inflamed his heart with the love of God that he became a religious.
Taken from THE GLORIES OF MARY by Alphonsus de Liguori