Pope St. Pius X on The Restoration of All Things in Christ
"To obtain this [restoration of all things in Christ]..., we must use every means and exert all our energy to bring about the utter disappearance of the enormous and detestable wickedness, so characteristic of our time - the substitution of man for God; this done, it remains to restore to their ancient place of honor the most holy laws and counsels of the gospel; to proclaim aloud the truths taught by the Church, and her teachings on the sanctity of marriage, on the education and discipline of youth, on the possession and use of property, the duties that men owe to those who rule the State; and lastly to restore equilibrium between the different classes of society according to Christian precept and custom."
"KEEP YOUR HOLY MASS. The Mass is the cornerstone of the Church; the Mass is the treasure Our Lord Jesus Christ gave us. ... We hold fast to the Mass, not because it is the Latin rite, but because it explicitly encompasses the truths of the Faith. We must be attached with all our heart and soul to the holy sacrifice of the Mass because it is in the Mass that we truly discover what the love of God has done for us. For if there is a testimony of God's love for us, it is indeed Our Lord Jesus Christ on the cross. What more could Our Lord have done than to immolate Himself on the cross to redeem us from our sins?"
-Archbishop Marcel Lefebvre
Taken from "The Mass of All Time"