Catechism of the Catholic Church §291 — excerpt
"In the beginning was the Word. . and the Word was God. . all things were made through him, and without him was not anything made that was made."
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: Nicene Creed: DS 150 · Hymn Veni, Creator Spiritus · Byzantine Troparion of Pentecost Vespers, "O heavenly King, Consoler"