Catechism of the Catholic Church §2219 — excerpt
Filial respect promotes harmony in all of family life; it also concerns relationships between brothers and sisters. Respect toward parents fills the home with light and warmth.
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.