"The above observation makes the hypothesis advanced by those who see Muhammad as the author of the Quran untenable. How could a man, from being illiterate, become the most important author, in terms of literary merits, in the whole of Arabic literature? How could he then pronounce truths of a scientific nature that no other human being could possibly have developed at that time, and all this without once making the slightest error in his pronouncement on the subject?"

Dr. Maurice Bucaille ('The Bible, the Quran and Science', 1978)