Lorenzo Valla, another of the writers who received special favours and emoluments at the hands of Alfonso, likewise came under the ecclesiastical ban. But his writings contained more serious offences than obscenity or ribaldry. He boldly questioned the authenticity of Constantine’s _Donation_ (a document which was later shown to be a forgery), and of other documents and literature held by the Church to be sacred, and the accuracy of his scholarship and the brilliancy of his polemical style, gave weight and force to his attacks. Denunciations came upon Valla’s head from many pulpits, and the matter was taken up by the Inquisition. But Alfonso told the monks that they must leave his secretary alone, and the proceedings were abandoned. When Nicholas V. came to the papacy, undeterred by the charge of heresies, he appointed Valla to the post of Apostolic writer, and gave him very liberal emoluments for work on the series of Greek translations before referred to. Valla never retracted any of his utterances against the Church, but he appears, after accepting the Pope’s appointment, to have turned his polemical ardour in other directions. He engaged in some bitter controversies with Poggio, Fazio, and other contemporaries, controversies which seem to have aroused and excited the literary circles of the time, but which turned upon matters of no lasting importance. It is a cause of surprise to later literary historians that men like Valla, possessed of real learning and of unquestioned literary skill, should have been willing to devote their time and their capacity to the futilities which formed the pretexts for the greater part of the personal controversies of the time. Professor Adams says of Valla: “He had all the pride and insolence and hardly disguised pagan feeling and morals of the typical humanist; but in spirit and methods of work he was a genuine scholar, and his editions lie at the foundation of all later editorial work in the case of more than one classic author, and of the critical study of the New Testament as well.”[417]