4 Through his incessant pastoral care the embers of heresy in Italy and Africa die out, ecclesiastical life in the Gauls is reorganized, the Visigoths of the Spains are welded together in the conversion which has already been begun among them, and the renowned English nation, which, "situated in a corner of the world, while it had hitherto remained obstinate in the worship of wood and stone" ( Reg . viii. 29, 30, ad Eulog. Episcop. Alexandr.), now also receives the true faith of Christ. Gregory's heart overflowed with joy at the news of this precious conquest, for his is the heart of a father embracing his most beloved son, and in attributing all the merit of it to Jesus the Redeemer, "for whose love," as he himself writes, "we are seeking our unknown brethren in Britain, and through whose grace we find unknown ones we were seeking" ( Reg . xi. 36 (28), ad Augustin. Anglorum Episcopum). And so grateful to the Holy Pontiff was the English nation that they called him always: our Master, our Doctor, our Apostle, our Pope, our Gregory , and considered itself as the seal of his apostolate. In fine, so salutary and so efficacious was his action that the memory of the works wrought by him became deeply impressed on the minds of posterity, especially during the Middle Ages, which breathed, so to say, the atmosphere infused by him, fed on his words, conformed its life and manners according to the example inculcated by him, with the result that Christian social civilization was happily introduced into the world in opposition to the Roman civilization of the preceding centuries, which now passed away for ever.
Source: Iucunda Sane (Vatican.va)