Catechism of the Catholic Church §30 — excerpt
"Let the hearts of those who seek the LORD rejoice." Although man can forget God or reject him, He never ceases to call every man to seek him, so as to find life and happiness.
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: St. Augustine, Conf. I, I, I: PL 32, 659-661