Pope Leo XIII
Dall'alto dell'Apostolico Seggio §8
Dall'alto dell'Apostolico Seggio
8 No means must be neglected that are in your power. All the resources of speech, every expedient in action, all the immense treasures of help and grace which the Church places in your hands, must be made use of, for the formation of a Clergy learned and full of the spirit of Jesus Christ, for the Christian education of youth, for the extirpation of evil doctrines, for the defence of Catholic truths, and for the maintenance of the Christian character and spirit of family life.
Source: Dall'alto dell'Apostolico Seggio (Vatican.va)