Catechism of the Catholic Church §2047 — excerpt
The moral life is a spiritual worship. Christian activity finds its nourishment in the liturgy and the celebration of the sacraments.
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.