Catechism of the Catholic Church §2621 — excerpt
In his teaching, Jesus teaches his disciples to pray with a purified heart, with lively and persevering faith, with filial boldness. He calls them to vigilance and invites them to present their petitions to God in his name.
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.