Our knowledge of Lanfranc's polemics is chiefly derived from the tract De cor pore et sanguine Domini which he wrote many years later (after 1079) when Berengar had been finally condemned.
Lutheranae, 1665), and as a writer of polemics he had few equals.
The collected literary works of Wagner in German fill ten volumes, and include political speeches, sketches for dramas that did not become operas, autobiographical chapters, aesthetic musical treatises and polemics of vitriolic violence.
In an age of violent polemics, distinguished himself by the virulence of his writings against the Protestants.
Some additional discoveries were described by Marc Antonio Boldetti in his Osservazioni, published in 1720; but, writing in the interests of the Roman Church with an apologetic, not a scientific object, truth was made to bend to polemics, and little addition to our knowledge of the catacombs is to be gained from his otherwise important work.