Nicholas of Cusa’s entire Islamic polemic rested on one Latin Qur’an translation.

Evidence

His example is of special interest on which it would be rewarding to spend longer. His work contains some additional information, but very little. Basically it is like Fitzralph’s — the product of pondering the text of Ketton’s Qur’an, although Cusa took other authors also into account. It is in other ways unlike, in that Cusa’s personality was markedly individual; moreover, his was an intellect particularly gifted for theological speculation; and this gives a new note to some of his apologetic. — Norman Daniel, Islam and the West, 1539