Note 2 — CANTO XII.
Charles Eliot Norton translation
Henry of Susa, cardinal of Ostia, who wrote a much studied commentary on the Decretals, and Thaddeus of Bologna, who, says Giovanni Villani, “was the greatest physician in Christendom.” The thought is the same as that at the beginning of Canto XI, where Dante speaks of “one following the Laws, and one the Aphorisms.”