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 by imagination or repetition of verses, that is, it is known that it is of quite a different kind from the poetry of Arabic speaking people, whether the language be acquired and learned, as is the case with non-Arabs, or it be the mother-tongue, as it is with the Arabs themselves. The first reason is the most weighty one. If it be asked how can it be known that the laws which contain both knowledge and precepts about deeds are of divine origin, so much so that they deserve the name of the word of God, we would say also that this also can be known in many ways. First, a knowledge of the laws cannot be acquired except after a knowledge of God, and of human happiness and misery; and the acts by which this happiness can be acquired, as charity and goodness and the works which divert men from happiness and produce eternal misery, such as evil and wickedness. Again the knowledge of human happiness and misery requires a knowledge of the soul and its substance, and whether it has eternal happiness or not. If it be so, then what is the quantity of this happiness, or misery; and also what amount of good would be the cause of happiness. For the case of goodness and evil is just the same as with food, which does not give health, if taken in any quantity and at any time; but must be used in a specified quantity and at an appointed time. For this reason we find these limited in the religious laws. All this, or a greater part of it, cannot be known but by divine revelation, or at least a knowledge through it would be better. Again a perfect knowledge of God requires a knowledge of existent things. Then a law-giver must know the quantity of this knowledge which would be good to be imparted to the common people, and the method to be adopted in teaching them. All this, or at least a greater part of it, cannot be acquired by education, learning or philosophy. This can be clearly known from imparting learning, and especially the giving of laws, making regulations, and giving information about the conditions of the Day of Judgment. When all this is found in the Quran in the most perfect form, there can be no doubt that it is a divine revelation and His word, given through the agency of His prophet. So God has said, informing the people about it, “Say, verily if man and genii were purposely assembled, that they might produce a book like this Quran, they could not produce one like it.” This idea is further strengthened, nay, comes near exact surety