Catechism of the Catholic Church §1162 — excerpt
"The beauty of the images moves me to contemplation, as a meadow delights the eyes and subtly infuses the soul with the glory of God."
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.
Also cites: St. John Damascene, De imag. 1, 27: PG 94, 1268A, B