The Responsio ad Lutherum , written by Thomas More under the pseudonym of Guillielmus Rosseus, represents an important phase of the violent controversy that developed between Luther and Henry VII after the publication in 1521 of the King's Assertio Septem Sacrementorum. Here, for the first time, More entered the field of polemical, religious warfare, beginning a career as Catholic apologist which he was to continue in his English works during the...