St. Augustine of Canterbury: Whereas the Faith is one and the same, why are there different customs in different churches? and why is one custom of masses observed in the holy Roman Church, and another in the Gallican Church?
Pope St. Gregory the Dialogist: You know, my brother, the custom of the Roman Church in which you remember you were bred up. But it pleases me, that if you have found anything, either in the Roman, or the Gallican, or any other church, which may be more acceptable to Almighty God, you carefully make choice of the same, and sedulously teach the Church of the English, which as yet is new in the Faith, whatsoever you can gather from the several churches. For things are not to be loved for the sake of places, but places for the sake of good things. Choose, therefore, from every church those things that are pious, religious, and upright, and when you have, as it were, made them up into one body, let the minds of the English be accustomed thereto. (Ecclesiastical History of the English Bk. 1.27)