Catechism of the Catholic Church §2513 — excerpt
The fine arts, but above all sacred art, "of their nature are directed toward expressing in some way the infinite beauty of God in works made by human hands.
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.