Catechism of the Catholic Church §971 — English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va (official text, quoted at the cited paragraph)
"All generations will call me blessed": "The Church's devotion to the Blessed Virgin is intrinsic to Christian worship." The Church rightly honors "the Blessed Virgin with special devotion. From the most ancient times the Blessed Virgin has been honored with the title of 'Mother of God,' to whose protection the faithful fly in all their dangers and needs.... This very special devotion ... differs essentially from the adoration which is given to the incarnate Word and equally to the Father and the Holy Spirit, and greatly fosters this adoration." The liturgical feasts dedicated to the Mother of God and Marian prayer, such as the rosary, an "epitome of the whole Gospel," express this devotion to the Virgin Mary.
This text is under copyright; the cited paragraph is quoted for study, with a link to the full document. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.
Why Pitre cites it
Devotion to Mary 'differs essentially from the adoration which is given to the incarnate Word' — the honour/worship distinction stated by the Church.
Notes
Inner quotations are from Lumen Gentium 66 and Paul VI, Marialis Cultus 42/56. Footnote numbers removed.