6 In the eyes of the best of his contemporaries Anselm seemed to shine as a luminary of sanctity and learning amid the darkness of the error and iniquity of the age in which he lived. He was in truth a "prince of the faith, an ornament of the Church . . . a glory of the episcopate, a man outranking all the great men" of his time ("Epicedion in obitum Anselmi"), "both learned and good and brilliant in speech, a man of splendid intellect" ("In Epitaphio") whose reputation was such that it has been well written of him that there was no man in the world then "who would say: Anselm is less than I, or like me" ("Epicedion in obitum Anselmi"), and hence esteemed by kings, princes, and supreme pontiffs, as well as by his brethren in religion and by the faithful, nay, "beloved even by his enemies" ( Ib .). While he was still Abbot the great and most powerful Pontiff Gregory VII wrote him letters breathing esteem and affection and "recommending the Catholic Church and himself to his prayers" ( Breviar. Rom .. die 21 Aprilis): to him also wrote Urban II recognizing "his distinction in religion and learning" (In libro 2 Epist. S. Anselmi, ep. 32); in many and most affectionate letters Paschal 11 extolled his "reverent devotion, strong faith, his pious and persevering zeal, his authority in religion and knowledge" (In lib. 3 Epist. S. Anselmi , ep. 74 et 42), which easily induced the Pontiff to accede to his requests and made him not hesitate to call him the most learned and devout of the bishops of England.
Source: Communium Rerum (Vatican.va)