64 We thank the Divine Goodness that all enthusiastically welcomed and encouraged this undertaking, which clearly proved that the missions are increasing and developing in influence and importance. Thanks to the activity of the missionaries, the Gospel spirit has been able so to imbue the minds of peoples of different customs, living in widely separated regions, that it has borne eloquent testimony of a new flowering of the fine art, which works redound to the praise of the Catholic Church and lend beauty to Divine worship.
Source: Evangelii Praecones (Vatican.va)