In that year Canisius opened the college of Innsbruck and directed the spiritual life of Magdalena, the saintly daughter of Ferdinand I. In 1564 he inaugurated the college of Dillingen and became administrator of the university of that place; he was also constituted secret nuncio of Pius IV to promulgate the decrees of the council in Germany. His mission was interrupted by the death of the Pope, and although Pius V desired him to continue in that office, he declined, because it exposed him to the accusation of meddling in politics. In 1566 he was theologian of the legate at the Diet of Augsburg and persuaded that dignitary not to issue a mandate against the so-called religious peace. He thus prevented another war and gave new life to the Catholics of Germany. In 1567 he founded a college at Würzburg, and evangelized Mayence and Spires. At Dillingen he received young Stanislaus Kostka into the Society conditionally and sent him to Rome; he settled a philosophical dispute at Innsbruck and established a college at Halle. At last in 1569 at his own request he was relieved of his office of provincial, which he had held for thirteen years; in 1570 he was court preacher of the Archduke Ferdinand II; in 1575 he was papal envoy to Bavaria, and theologian to the papal legate at the Diet of Ratisbon. He introduced the Sodality of the Blessed Virgin at Innsbruck, and at the command of the Pope built a college at Freiburg, where he remained for the rest of his life. For years Canisius had urged his superiors and had also pleaded at the Council of Trent for the establishment of colleges of writers in various countries to defend the Faith. He was in constant touch with the great printers and publishers of the day, such as Plantin, Cholin and Mayer; he brought out the first reports of foreign missions, and induced the town council of Freiburg to establish a printing-press. All this time he was actively writing, and the list of his publications covers thirty-eight quarto pages in the "Bibliothèque des écrivains de la C. de Jésus." He was commissioned by Pius V to refute the Centuriators of Magdeburg--the society of writers who, under the inspiration of Flacius Illyricus, had undertaken to falsify the works of the early Fathers of the Church, century by century, so as to furnish a historical proof in support of Luther's errors. In 1583 he united in one volume the two books which he had previously issued in 1571 and 1577, styling them "Commentaria de Verbi corruptelis," having in the meantime published the genuine texts of Saints Cyril and Leo.