“MAHOMET simplified much more than did say Pelagius or even Arius. He turned Our Lord into a mere prophet, though the greatest of the prophets; Our Lady—whom he greatly revered, and whom his followers still revere—he turned into no more than the mother of so great a prophet; he cut out the Eucharist altogether, and what was most difficult to follow in the matter of the Resurrection. He abolished all idea of priesthood: most important of all, he declared for social equality among all those who should be “true believers” after his fashion.”
~Hilaire Belloc: Survivals and New Arrivals, Chap. V.