Ad Diem Illum Laetissimum §16

¹⁶ Under these circumstances, Venerable Brethren, it is this end which all the solemnities that are everywhere being prepared in honor of the holy and Immaculate Conception of Mary should have in view. No homage is more agreeable to her, none is sweeter to her than that we should know and really love Jesus Christ. Let then crowds fill the churches - let solemn feasts be celebrated and public rejoicings be made: these are things eminently suited for enlivening our faith. But unless heart and will be added, they will all be empty forms, mere appearances of piety. At such a spectacle, the Virgin, borrowing the words of Jesus Christ, would address us with the just reproach: "This people honoureth me with their lips, but their heart is far from me" ( Matth . xv., 8).