27 How it was that this humble monk, with hardly any human means at his disposal, was able to draw the strength to overcome difficulties so thorny, to settle questions so intricate, and to solve the most troublesome cases, can only be understood when one considers the great holiness of life which distinguished him, and his great zeal for truth. For, as We have said, he was, above all, on fire with a most burning love of God and his neighbor (which as you know, Venerable Brethren, is the chief and, as it were, all embracing commandment of the gospel), so that he was, not only united to the heavenly father by an unfailing mystical bond, but he desired nothing more than to win men to Christ, to uphold the most sacred rights of the Church, and to defend as best he could the integrity of the Catholic faith.
Source: Doctor Mellifluus (Vatican.va)