Catechism of the Catholic Church §2373 — excerpt
Sacred Scripture and the Church's traditional practice see in large families a sign of God's blessing and the parents' generosity.
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.
Also cites: GS 50 # 2