7 This is not the place to recall in detail the life of this man, so eminent in sanctity, the zeal with which he labored to restore harmony and union to his country torn by dissension and revolt, the ardor of his public debates with the teachers of error, his inspiring sermons, the persecutions he suffered, the many countries he travelled through, and the difficult missions he undertook in the interest of the faith. However, to return to the weapons of knowledge which we have mentioned: how constantly, readily, wisely, and fitly he employed them! Upon his return from Messana where he went as a teacher of rhetoric, he committed himself to the teaching of the sacred sciences in the academies of Cologne, Ingolstadt, and Vienna. Here he followed the royal road of the most approved learned men of the Christian school and revealed to the Germans the treasures of scholastic philosophy. As this philosophy was shunned at that time by the enemies of the faith because it was a great support of Catholic truth, he had it taught publicly in the schools and colleges of the Society of Jesus for whose establishment he had worked so hard.
Source: Militantis Ecclesiae (Vatican.va)