QUO PRIMUM Apostolic Constitution decreed by Pope Saint Pius V on July 14, 1570 which set in stone for all time the exactness of the Holy Sacrifice of the Mass to be said in the Mother Tongue of the Church To Our Venerable Brethren: the Patriarchs, Primates, Archbishops, Bishops, and other Local Ordinaries in Peace and Communion with the Apostolic See -- Venerable Brethren, health and Apostolic Benediction! From the very first, upon Our elevation to the cheif Apostleship, We gladly turned our mind and energies and directed all out thoughts to those matters which concerned the...