33 The times are indeed greatly changed. But, as We have more than once repeated, nothing is changed in the life of the Church. From her Divine Founder she has inherited the virtue of being able to supply at all times, however much they may differ, all that is required not only for the spiritual welfare of souls, which is the direct object of her mission, but also everything that aids progress in true civilization, for this follows as a natural consequence of that same mission.
Source: Iucunda Sane (Vatican.va)