Catechism of the Catholic Church §2251 — excerpt
Children owe their parents respect, gratitude, just obedience, and assistance. Filial respect fosters harmony in all of family life.
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.