Catechism of the Catholic Church §1676 — excerpt
Pastoral discernment is needed to sustain and support popular piety and, if necessary, to purify and correct the religious sense which underlies these devotions so that the faithful may advance in knowledge of the mystery of Christ.
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: John Paul II, CT 54 · CELAM, Third General Conference (Puebla, 1979), Final Document # 448 (tr. NCCB, 1979) · Paul VI, EN 48