Catechism of the Catholic Church §1201 — excerpt
The mystery of Christ is so unfathomably rich that it cannot be exhausted by its expression in any single liturgical tradition. the history of the blossoming and development of these rites witnesses to a remarkable complementarity.
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: Paul VI, EN 63-64