Catechism of the Catholic Church §1719 — excerpt
The Beatitudes reveal the goal of human existence, the ultimate end of human acts: God calls us to his own beatitude. This vocation is addressed to each individual personally, but also to the Church as a whole, the new people made up of those who have accepted the promise and live from it in faith.
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.