Catechism of the Catholic Church §507 — excerpt
At once virgin and mother, Mary is the symbol and the most perfect realization of the Church: "the Church indeed. . by receiving the word of God in faith becomes herself a mother.
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: LG 64 · 63