Such are the characteristics of scientific certitude. As to the transport which permits men to see the truth and, so to speak, to handle it, it is only known to the Sufis. What I have just said regarding the true nature of inspiration is sufficient for the aim which I have proposed to myself. I may return to the subject later, if necessary.
I pass now to the causes of the decay of faith and show the means of bringing back those who have erred and of preserving them from the dangers which threaten them. To those who doubt because they are tinctured with the doctrine of the Ta’limites, my treatise entitled _The Just Balance_ affords a sufficient guide; therefore it is unnecessary to return to the subject here.
As to the vain theories of the Ibahat, I have grouped them in seven classes, and explained them in the work entitled _Alchemy of Happiness_. For those whose faith has been undermined by philosophy, so far that they deny the reality of inspiration, we have proved the truth and necessity of it, seeking our proofs in the hidden properties of medicines and of the heavenly bodies. It is for them that we have written this treatise, and the reason for our seeking for proofs in the sciences of medicine and of astronomy is because these sciences belong to the domain of philosophy. All those branches of knowledge which our opponents boast of—astronomy, medicine, physics, and divination—provide us with arguments in favour of the Prophet.
As to those who, professing a lip-faith in the Prophet, adulterate religion with philosophy, they really deny inspiration, since in their view the Prophet is only a sage whom a superior destiny has appointed as guide to men, and this view belies the true nature of inspiration. To believe in the Prophet is to admit that there is above intelligence a sphere in which are revealed to the inner vision truths beyond the grasp of intelligence, just as things seen are not apprehended by the sense of hearing, nor things understood by that of touch. If our opponent denies the existence of such a higher region, we can prove to him, not only its possibility, but its actuality. If, on the contrary, he admits its existence, he recognises at the same time that there are in that sphere things which reason cannot grasp; nay, which reason rejects as false and absurd. Suppose, for instance, that the fact of dreams occurring in sleep were not so common and notorious as it is, our wise men would not fail to repudiate the assertion that the secrets of the invisible world can be revealed while the senses are, so to speak, suspended.