8 O Venerable Brethren, We desire that, this year, this prayer should be offered with such greater fervor of heart as is demanded by the increased urgency of the need. We well know the Rosary's powerful efficacy to obtain the maternal aid of the Virgin. By no means is there only one way to pray to obtain this aid. However, We consider the Holy Rosary the most convenient and most fruitful means, as is clearly suggested by the very origin of this practice, heavenly rather than human, and by its nature. What prayers are better adapted and more beautiful than the Lord's prayer and the angelic salutation, which are the flowers with which this mystical crown is formed? With meditation of the Sacred Mysteries added to the vocal prayers, there emerges another very great advantage, so that all, even the most simple and least educated, have in this a prompt and easy way to nourish and preserve their own faith.
Source: Ingruentium Malorum (Vatican.va)