Catechism of the Catholic Church §1896 — excerpt
Where sin has perverted the social climate, it is necessary to call for the conversion of hearts and appeal to the grace of God. Charity urges just reforms.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.