Some of the maxims found in my works regarding the mysteries of religion have met with objectors of an inferior rank in science, whose intellectual penetration is insufficient to fathom such depths. They assert that these maxims are borrowed from the ancient philosophers, whereas the truth is that they are the fruit of my own meditations, but as the proverb says, “Sandal follows the impress of sandal.”[1] Some of them are found in our books of religious law, but the greater part are derived from the writings of the Sufis.
But even if they were borrowed exclusively from the doctrines of the philosophers, is it right to reject an opinion when it is reasonable in itself, supported by solid proofs, and contradicting neither the Koran nor the traditions? If we adopt this method and reject every truth which has chanced to have been proclaimed by an impostor, how many truths we should have to reject! How many verses of the Koran and traditions of the prophets and Sufi discourses and maxims of sages we must close our ears to because the author of the Treatise of the Brothers of Purity has inserted them in his writings in order to further his cause, and in order to lead minds gradually astray in the paths of error! The consequence of this procedure would be that impostors would snatch truths out of our hands in order to embellish their own works. The wise man, at least, should not make common cause with the bigot blinded by ignorance.
Honey does not become impure because it may happen to have been placed in the glass which the surgeon uses for cupping purposes. The impurity of blood is due, not to its contact with this glass, but to a peculiarity inherent in its own nature; this peculiarity, not existing in honey, cannot be communicated to it by its being placed in the cupping glass; it is therefore wrong to regard it as impure. Such is, however, the whimsical way of looking at things found in nearly all men. Every word proceeding from an authority which they approve is accepted by them, even were it false; every word proceeding from one whom they suspect is rejected, even were it true. In every case they judge of the truth according to its professors and not of men according to the truth which they profess, a ne plus ultra of error. Such is the peril in which philosophy involves its opponents.
The second danger threatens those who accept the opinions of the philosophers. When, for instance, we read the treatises of the “Brothers of purity” and other works of the same kind, we find in them sentences spoken by the Prophet and quotations from the Sufis. We approve these works; we give them our confidence; and we finish by accepting the errors which they contain, because of the good opinion of them with which they have inspired us at the outset. Thus, by insensible degrees, we are led astray. In view of this danger the reading of philosophic writings so full of vain and delusive utopias should be forbidden, just as the slippery banks of a river are forbidden to one who knows not how to swim. The perusal of these false teachings must be prevented just as one prevents children from touching serpents. A snake-charmer himself will abstain from touching snakes in the presence of his young child, because he knows that the child, believing himself as clever as his father, will not fail to imitate him; and in order to lend more weight to his prohibition the charmer will not touch a serpent under the eyes of his son.
Such should be the conduct of a learned man who is also wise. But the snake-charmer, after having taken the serpent and separated the venom from the antidote, having put the latter on one side and destroyed the venom, ought not to withhold the antidote from those who need it. In the same way the skilled coin-assayer, after having put his hand in the bag of the false coiner, taken out the good coins and thrown away the bad ones, ought not to refuse the good to those who need and ask for it. Such should be the conduct of the learned man. If the patient feels a certain dislike of the antidote because he knows that it is taken from a snake whose body is the receptacle of poison, he should be disabused of his fallacy. If a beggar hesitates to take a piece of gold which he knows comes from the purse of a false coiner, he should be told that his hesitation is a pure mistake which would deprive him of the advantage which he seeks. It should be proved to him that the contact of the good coins with the bad does not injure the former and does not improve the latter. In the same way the contact of truth with falsehood does not change truth into falsehood, any more than it changes falsehood into truth.
Thus much, then, we have to say regarding the inconveniences and dangers which spring from the study of philosophy.
Sufism
When I had finished my examination of these doctrines I applied myself to the study of Sufism. I saw that in order to understand it thoroughly one must combine theory with practice. The aim which the Sufis set before them is as follows: To free the soul from the tyrannical yoke of the passions, to deliver it from its wrong inclinations and evil instincts, in order that in the purified heart there should only remain room for God and for the invocation of His holy name.