110 We wish, therefore, to say that there is a special place in Our heart for these beloved sons, and for all who generously assist them in their fields of labor by teaching catechism or in other ways. Every day We offer humble prayers to God for them and their endeavors. We wish to confirm with Our authority, and with like affection, all that Our predecessors—especially Pius XI (59) and Pius XII (60)—have seen fit to set down on this subject in their Encyclical Letters.
Source: Ad Petri Cathedram (Vatican.va)