Catechism of the Catholic Church §1083 — excerpt
The dual dimension of the Christian liturgy as a response of faith and love to the spiritual blessings the Father bestows on us is thus evident.
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.