Now if we loudly preach all this, and testify to all this, namely that Christ is the power of God and the wisdom of God, always changeless, always imperishable, though He comes in the changeable and the perishable; never stained Himself, but making clean that which is stained; what is the crime that we commit, and wherefore are we hated? And what means this opposing array of new Altars? Do we announce another Jesus? Do we hint at another? Do we produce other scriptures? Have any of ourselves dared to say “Mother of Man” of the Holy Virgin, the Mother of God: which is what we hear that some of them say without restraint?
Do we romance about three Resurrections? Do we promise the gluttony of the Millennium? Do we declare that the Jewish animal-sacrifices shall be restored? Do we lower men's hopes again to the Jerusalem below, imagining its rebuilding with stones of a more brilliant material? What charge like these can be brought against us, that our company should be reckoned a thing to be avoided, and that in some places another altar should be erected in opposition to us, as if we should defile their sanctuaries?
My heart was in a state of burning indignation about this: and now that I have set foot in the City again, I am eager to unburden my soul of its bitterness, by appealing, in a letter, to your love. Do ye, wherever the Holy Spirit shall lead you, there remain; walk with God before you; confer not with flesh and blood; lend no occasion to any of them for glorying, that they may not glory in you, enlarging their ambition by anything in your lives. Remember the Holy Fathers, into whose hands you were commended by your Father now in bliss, and to whom we by God's grace were deemed worthy to succeed and remove not the boundaries which our Fathers have laid down, nor put aside in any way the plainness of our simpler proclamation in favour of their subtler school.
Walk by the primitive rule of the Faith: and the God of peace shall be with you, and you shall be strong in mind and body. May God keep you uncorrupted, is our prayer.
Source: Letters (New Advent)