kind of miracles, which are its conclusive proofs, be not found in them. So according to this principle must be understood the proofs of prophecy afforded by miracles, that is, the miracles of knowledge and deeds are its conclusive proofs while others only make it strong, and can be used as witnesses. So now it has become clear to you that men of this kind do exist, and bow can men be sure of them, except by their repeated appearence; as is the case with physicians and other kinds of men. If it be asked: How can it be proved that the Quran is a conclusive proof that is a miracle which is the business of the prophets to perform, as curing is the business of a physician, we would say that this can be known in many ways:First, the precepts which it contains about knowledge and deeds, cannot be acquired by learning, but only by divine revelation; secondly, by the information which it gives about hidden things; and thirdly, by its poetry, which is quite different from that which can be achieved
