Catechism of the Catholic Church §2046 — excerpt
By living with the mind of Christ, Christians hasten the coming of the Reign of God, "a kingdom of justice, love, and peace." They do not, for all that, abandon their earthly tasks; faithful to their master, they fulfill them with uprightness, patience, and love.
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: Roman Missal, Preface of Christ the King