Catechism of the Catholic Church §922 — excerpt
From apostolic times Christian virgins, called by the Lord to cling only to him with greater freedom of heart, body, and spirit, have decided with the Church's approval to live in a state of virginity "for the sake of the Kingdom of heaven."
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.