Salomon Reinach said this quote

“ From the literary point of view, the Koran has little merit. Declamation, repetition, puerility, a lack of logic and coherence strike the unprepared reader at every turn. It is humiliating to the human intellect to think that this mediocre literature has been the subject of innumerable commentaries, and that millions of men are still wasting time in absorbing it. (Orpheus, Salmon Reinach, 1932. See page 175 of the book here) ”