Introduction
  [Corrected from the somewhat inaccurate account at http://members.tripod.com/~wzzz/GHAZALI.html]
  Abu Hamid Ibn Muhammad Ibn Muhammad al-Tusi al-Shafi'i al-Ghazali   [Ghazali in Persian, Al-Ghazali in Arabic) was born in 450/41
    AH/1058 A.D. in Tus in Khorasan, (a region of Iran). His father died while he was still
    very young but he had the opportunity of getting education in the prevalent curriculum at
    Nishapur and Baghdad. Soon he acquired a high standard of scholarship in religion and
    philosophy and was honoured by his appointment as a Professor at the Nizamiyah University
    of Baghdad, which was recognised as one of the most reputed institutions of learning in
    the golden era of Muslim history. After a few years, however, he gave up his academic
    pursuits and worldly interests and became a wandering ascetic. This was a process (period)
    of personal mystical transformation. Later, he resumed his teaching duties, but again left
    these. An era of solitary life, devoted to contemplation and writing then ensued, which
    led to the author- ship of a number of everlasting books. He died in 505 AH/1111 A.D. at
    Tus.
  Al-Ghazali's major contribution lies in religion, philosophy and Sufism. A number
    of Muslim philosophers had been following and developing several viewpoints of Greek
    philosophy, including the Neoplatonic philosophy, and had lead to conflict with several
    Islamic teachings. On the other hand, the movement of sufism was assuming such excessive
    proportions as to avoid observance of obligatory prayers and duties of Islam. Based on his
    unquestionable scholarship and personal mystical experience, Ghazali sought to rectify
    these trends, both in philosophy and sufism.
  In philosophy, Ghazali upheld the approach of mathematics and exact sciences as
    essentially correct. However, he adopted the techniques of Aristotelian logic and the
    Neoplatonic procedures and employed these very tools to lay bare the flaws and lacunas of
    the then prevalent Neoplatonic philosophy and to diminish the negative influences of
    Aristotelianism and excessive rationalism. In contrast to some of the Muslim philosophers,
    e.g., al-Farabi, he portrayed the inability of reason to comprehend the absolute and the
    infinite. Reason could not transcend the finite and was limited to the observa- tion of
    the relative. Also, several Muslim philosophers had held that the universe was finite in
    space but infinite in time. Ghazali argued that an infinite time was related to an
    infinite space. 
  In religion, particularly mysticism, he cleansed the approach of sufism of its
    excesses and reestablished the authority of the orthodox (i.e. Sunni) religion. Yet, he
    stressed the importance of genuine sufism, which he maintained was the path to attain the
    absolute truth.
  He was a prolific writer. His books include Tahafut al-Falasifa (The
    Incoherence of the Philosophers), Ihya al-'Ulum al-Islamia (The Rivival of the
      Religious Sciences), "The Beginning of Guidance and his Autobiography",
      "Deliverance from Error". Some of his works were translated into Latin in the
      Middle Ages, where he was known as Algazel and via the translation of a truncated work,
      the Maqasid al-Falasifa [The Intentions of the Philosophers.]
  Al-Ghazali's influence was deep and everlasting. He is one of the greatest
    theologians of Islam and his influence penetrated Europe, influenced Jewish and Christian
    Scholasticism, and several of his arguments seem to have been adopted by  Thomas
    Aquinas in order to similarly reestablish the authority of orthodox Christian religion in
    the West.
   
  The Deliverance from Error
  The Munkidh min al-Dalal (Deliverance from Error), is a sort of
    intellectual autobiography. A more modern translation can be found in W. Montgomery Watt, The
    Faith and Practice of Al-Ghazali, (London: 1951).
  The following, an excerpt from the Encyclopedia of Philosophy (New York:
    Macmillan, 1967), explains the significance of the work:
  
      At the age of 36, Ghazali experienced a profound crisis, provoked by the
        problem of intellectual certitude. He abandoned his professorship and his position as
        rector of Nizamiya University of Baghdad. During a period of ten years, clothed in the
        characteristic wool garment of the Sufis and completely absorbed in spiritual practices,
        he made solitary pilgrimages throughout the Muslim world, to Syria, Egypt, Mecca, and
        Medina. What he conveyed in his doctrines cannot be separated from this pathetic
        experience. He solved the problem of knowledge and certitude by affirming a degree of
        comprehension that left the heart no room for doubt, a comprehension that is the essential
        apprehension of things. The thinking soul becomes the focus of the universal Soul's
        irradiations, the mirror of intelligible forms received from the universal Soul. This
        theme dominates certain characteristic short treatises (the Monqidh  or
          "Preservative From Error," [this text], the Risalat alLadoniya, etc.)
        as well as the great synthesis entitled Ilya Ulum ad-Din ("Revival of the Religious
        Sciences"). But this theme had already been treated, undoubtedly without his
        knowledge, by the Imams of Shi'ism, and it does not differ essentially from the Ishraq of
        Sohrawardi. This very theme led Sohrawardi! to advance philosophy on a new basis rather
        than destroy the efforts of philosophers as such.
    It is principally this aspect of Ghazali's work, developed in his Tahafut
      al-Falasifa ("Autodestruction of the Philosophers") that Westerners have
        been inclined to emphasize. An attempt has even been made to read into it a more incisive
        and decisive critique or metaphysics than that of Kant. In fact, Ghazali strove vehemently
        to destroy the demonstrative range that philosophers, Avicennians as well as others,
        accorded to their arguments regarding the eternity of the world, the procession of the
        Intelligences, the existence of purely spiritual substances, and the idea of spiritual
        resurrection. In general Ghazal! strove to refute the idea of any causality, of any
        necessary connection. According to him all thatean be experimentally affirmed is, for
        example, that combustion of cotton occurs at the moment of contact with fire; it cannot be
        shown that combustion takes place because of the contact between cotton and fire. Nor can
        it be shown that there is any cause whatsoever. From this bursts forth the paradox of a
        thinker who professes the inability of reason to attain certitude while maintaining the
        certitude of destroying, with massive doses of rational dialectic, the certitudes of the
        philosophers. Averroe s clearly discerned this self-contradiction and replied to it with
        his celebrated Tahafut al-Tahafut ("Autodestruction of the
      Autodestruction").
  
  
    Quoth the Imam Ghazali: 
  Glory be to God, whose praise should precede every writing and every speech! May the
    blessings of God rest on Mohammed, his Prophet and his Apostle, on his family and
    companions, by whose guidance error is escaped! 
  You have asked me, O brother in the faith, to expound the aim and the mysteries of
    religious sciences, the boundaries and depths of theological doctrines. You wish to know
    my experiences while disentangling truth lost in the medley of sects and divergencies of
    thought, and how I have dared to climb from the low levels of traditional belief to the
    topmost summit of assurance. You desire to learn what I have borrowed, first of all from
    scholastic theology; and secondly from the method of the Ta'limites, who, in seeking
    truth, rest upon the authority of a leader; and why, thirdly, I have been led to reject
    philosophic systems; and finally, what I have accepted of the doctrine of the Sufis, and
    the sum total of truth which I have gathered in studying every variety of opinion. You ask
    me why, after resigning at Baghdad a teaching post which attracted a number of hearers, I
    have, long afterward, accepted a similar one at Nishapur. Convinced as I am of the
    sincerity which prompts your inquiries, I proceed to answer them, invoking the help and
    protection of God. 
  Know then, my brothers (may God direct you in the right way), that the diversity in
    beliefs and religions, and the variety of doctrines and sects which divide men, are like a
    deep ocean strewn with shipwrecks, from which very few escape safe and sound. Each sect,
    it is true, believes itself in possession of the truth and of salvation, "each
    party," as the Qur'an saith, "rejoices in its own creed"; but as the chief
    of the apostles, whose word is always truthful, has told us, "My people will be
    divided into more than seventy sects, of whom only one will be saved." This
    prediction, like all others of the Prophet, must be fulfilled. 
  From the period of adolescence, that is to say, previous to reaching my twentieth year
    to the present time when I have passed my fiftieth, I have ventured into this vast ocean;
    I have fearlessly sounded its depths, and like a resolute diver, I have penetrated its
    darkness and dared its dangers and abysses. I have interrogated the beliefs of each sect
    and scrutinized the mysteries of each doctrine, in order to disentangle truth from error
    and orthodoxy from heresy. I have never met one who maintained the hidden meaning of the
    Qur'an without investigating the nature of his belief. nor a partisan of its exterior
    sense without inquiring into the results of his doctrine. There is no philosopher whose
    system I have not fathomed, nor theologian the intricacies of whose doctrine I have not
    followed out. 
  Sufism has no secrets into which I have not penetrated; the devout adorer of Deity has
    revealed to me the aim of his austerities; the atheist has not been able to conceal from
    me the real reason of his unbelief. The thirst for knowledge was innate in me from an
    early age; it was like a second nature implanted by God, without any will on my part. No
    sooner had I emerged from boyhood than I had already broken the fetters of tradition and
    freed myself from hereditary beliefs. 
  Having noticed how easily the children of Christians become Christians, and the
    children of Muslims embrace Islam, and remembering also the traditional saying ascribed to
    the Prophet, "Every child has in him the germ of Islam, then his parents make him
    Jew, Christian, or Zarathustrian," I was moved by a keen desire to learn what was
    this innate disposition in the child, the nature of the accidental beliefs imposed on him
    by the authority of his parents and his masters, and finally the unreasoned convictions
    which he derives from their instructions. 
  Struck with the contradictions which I encountered in endeavoring to disentangle the
    truth and falsehood of these opinions, I was led to make the following reflection:
    "The search after truth being the aim which I propose to myself, I ought in the first
    place to ascertain what are the bases of certitude." In the next place I recognized
    that certitude is the clear and complete knowledge of things, such knowledge as leaves no
    room for doubt nor possibility of error and conjecture, so that there remains no room in
    the mind for error to find an entrance. In such a case it is necessary that the mind,
    fortified against all possibility of going astray, should embrace such a strong conviction
    that, if, for example, any one possessing the power of changing a stone into gold, or a
    stick into a serpent, should seek to shake the bases of this certitude, it would remain
    firm and immovable. Suppose, for instance, a man should come and say to me, who am firmly
    convinced that ten is more than three, "No; on the contrary, three is more than ten,
    and, to prove it, I change this rod into a serpent," and supposing that he actually
    did so, I should remain none the less convinced of the falsity of his assertion, and
    although his miracle might arouse my astonishment, it would not instil any doubt into my
    belief. 
  I then understood that all forms of knowledge which do not unite these conditions
    (imperviousness to doubt, etc.) do not deserve any confidence, because they are not beyond
    the reach of doubt, and what is not impregnable to doubt can not constitute certitude. 
   
  The Subterfuges of the Sophists
  I then examined what knowledge I possessed, and discovered that in none of it, with the
    exception of sense-perceptions and necessary principles, did I enjoy that degree of
    certitude which I have just described. I then sadly reflected as follows: "We can not
    hope to find truth except in matters which carry their evidence in themselves---that is to
    say, in sense-perceptions and necessary principles; we 
  must therefore establish these on a firm basis. Is my absolute confidence in
    sense-perceptions and on the infallibility of necessary principles analogous to the
    confidence which I formerly possessed in matters believed on the authority of others? Is
    it only analogous to the reliance most people place on their organs of vision, or is it
    rigorously true without admixture of illusion or doubt?" 
  I then set myself earnestly to examine the notions we derive from the evidence of the
    senses and from sight in order to see if they could be called in question. The result of a
    careful examination was that my confidence in them was shaken. Our sight, for instance,
    perhaps the best practiced of all our senses, observes a shadow, and finding it apparently
    stationary pronounces it devoid of movement. Observation and experience, however, show
    subsequently that a shadow moves not suddenly, it is true, but gradually and
    imperceptibly, so that it is never really motionless. 
  Again, the eye sees a star and believes it as large as a piece of gold, but
    mathematical calculations prove, on the contrary, that it is larger than the earth. These
    notions, and all others which the senses declare true, are subsequently contradicted and
    convicted of falsity in an irrefragable manner by the verdict of reason. 
  Then I reflected in myself: "Since I can not trust to the evidence of my senses, I
    must rely only on intellectual notions based on fundamental principles, such as the
    following axioms: 'Ten is more than three. Affirmation and negation can not coexist
    together. A thing can not both be created and also existent from eternity, living and
    annihilated simultaneously, at once necessary and impossible.'" To this the notions I
    derived from my senses made the following objections: "Who can guarantee you that you
    can trust to the evidence of reason more than to that of the senses? You believed in our
    testimony till it was contradicted by the verdict of reason, otherwise you would have
    continued to believe it to this day. Well, perhaps, there is above reason another judge
    who, if he appeared, would convict reason of falsehood, just as reason has confuted us.
    And if such a third arbiter is not yet apparent, it does not follow that he does not
    exist." 
  To this argument I remained some time without reply; a reflection drawn from the
    phenomena of sleep deepened my doubt. "Do you not see," I reflected, "that
    while asleep you assume your dreams to be indisputably real? Once awake, you recognize
    them for what they are---baseless chimeras. Who can assure you, then, of the reliability
    of notions which, when awake, you derive from the senses and from reason? In relation to
    your present state they may be real; but it is possible also that you may enter upon
    another state of being which will bear the same relation to your present state as this
    does to your condition when asleep. In that new sphere you will recognize that the
    conclusions of reason are only chimeras." 
  This possible condition is perhaps, that which the Sufis call "ecstasy" (hal),
    that is to say, according to them, a state in which, absorbed in themselves and in the
    suspension of sense-perceptions, they have visions beyond the reach of intellect. Perhaps
    also Death is that state, according to that saying of the prince of prophets: "Men
    are asleep; when they die, they wake." Our present life in relation to the future is
    perhaps only a dream, and man, once dead, will see things in direct opposition to those
    now before his eyes; he will then understand that word of the Qur'an, "To-day we have
    removed the veil from thine eyes and thy sight is keen." 
  Such thoughts as these threatened to shake my reason, and I sought to find an escape
    from them. But how? In order to disentangle the knot of this difficulty, a proof was
    necessary. Now a proof must be based on primary assumptions, and it was precisely these of
    which I was in doubt. This unhappy state lasted about two months, during which I was, not,
    it is true, explicitly or by profession, but morally and essentially, a thorough-going
    skeptic. 
  God at last deigned to heal me of this mental malady; my mind recovered sanity and
    equilibrium, the primary assumptions of reason recovered with me all their stringency and
    force. I owed my deliverance, not to a concatenation of proofs and arguments, but to the
    light which God caused to penetrate into my heart---the light which illuminates the
    threshold of all knowledge. To suppose that certitude can be only based upon formal
    arguments is to limit the boundless mercy of God. Some one asked the Prophet the
    explanation of this passage in the Divine Book: "God opens to Islam the heart of him
    whom he chooses to direct." "That is spoken," replied the Prophet, "of
    the light which God sheds in the heart." "And how can man recognize that
    light?" he was asked. "By his detachment from this world of illusion and by a
    secret drawing toward the eternal world," the Prophet replied. 
  On another occasion he said: "God has created his creatures in darkness, and then
    has shed upon them his light." It is by the help of this light that the search for
    truth must be carried on. As by his mercy this light descends from time to time among men,
    we must ceaselessly be on the watch for it. This is also corroborated by another saying of
    the Apostle: "God sends upon you, at certain times, breathings of his grace; be
    prepared for them." 
  My object in this account is to make others understand with what earnestness we should
    search for truth, since it leads to results we never dreamed of. Primary assumptions have
    not got to be sought for, since they are always present to our minds; if we engage in such
    a search, we only find them persistently elude our grasp. But those who push their
    investigation beyond ordinary limits are safe from the suspicion of negligence in pursuing
    what is within their reach. 
   
  The Different Kinds of Seekers After Truth
  When God in the abundance of his mercy had healed me of this malady, I ascertained that
    those who are engaged in the search for truth may be divided into three groups: 
  
      I. Scholastic theologians, who profess to follow theory and speculation. 
    II. The philosophers, who profess to rely upon formal logic. 
    III. The Sufis, who call themselves the elect of God and possessors of intuition and
      knowledge of the truth by means of ecstasy. 
  
  "The truth," I said to myself, "must be found among these three classes
    of men who devote themselves to the search for it. If it escapes them, one must give up
    all hope of attaining it. Having once surrendered blind belief, it is impossible to return
    to it, for the essence of such belief is to be unconscious of itself. As soon as this
    unconsciousness ceases it is shattered like a glass whose fragments can not be again
    reunited except by being cast again into the furnace and refashioned." Determined to
    follow these paths and to search out these systems to the bottom, I proceeded with my
    investigations in the following order: Scholastic theology; philosophical systems; and,
    finally Sufism. 
   
  The Aim of Scholastic Theology and Its Results
  Commencing with theological science, I carefully studied and meditated upon it. I read
    the writings of the authorities in this department and myself composed several treatises.
    I recognized that this science, while sufficing its own requirements, could not assist me
    in arriving at the desired goal. In short, its object is to preserve the purity of
    orthodox beliefs from all heretical innovation. God, by means of his apostle, has revealed
    to his creatures a belief which is true as regards their temporal and eternal interests;
    the chief articles of it are laid down in the Qur'an and in the traditions. Subsequently,
    Satan suggested to innovators principles contrary to those of orthodoxy; they listened
    greedily to his suggestions, and the purity of the faith was menaced. God then raised up a
    school of theologians and inspired them with the desire to defend orthodoxy by means of a
    system of proofs adapted to unveil the devices of the heretics and to foil the attacks
    which they made on the doctrines established by tradition. 
  Such is the origin of scholastic theology. Many of its adepts, worthy of their high
    calling, valiantly defended the orthodox faith by proving the reality of prophecy and the
    falsity of heretical innovations. But, in order to do so, they had to rely upon a certain
    number of premises, which they accepted in common with their adversaries, and which
    authority and universal consent or simply the Qur'an and the traditions obliged them to
    accept. Their principal effort was to expose the self-contradictions of their opponents
    and to confute them by means of the premises which they had professed to accept. Now a
    method of argumentation like this has little value for one who only admits self-evident
    truths. Scholastic theology could not consequently satisfy me nor heal the malady from
    which I suffered. 
  It is true that in its later development theology was not content to defend dogma; it
    betook itself to the study of first principles, of substances, accidents and the laws
    which govern them; but through want of a thoroughly scientific basis, it could not advance
    far in its researches, nor succeed in dispelling entirely the over-hanging obscurity which
    springs from diversities of belief. 
  I do not, however, deny that it has had a more satisfactory result for others; on the
    contrary, I admit that it has; but it is by introducing the principle of authority in
    matters which are not self-evident. Moreover, my object is to explain my own mental
    attitude and not to dispute with those who have found healing for themselves. Remedies
    vary according to the nature of the disease; those which benefit some may injure others. 
  Philosophy. ---How far it is open to censure or not--- On what points its adherents
    may be considered believers or unbelievers, orthodox or heretical---What they have
    borrowed from the true doctrine to render their chimerical theories acceptable---Why the
    minds of men swerve from the truth---What criteria are available wherewith to separate the
    pure gold from the alloy in their systems. 
  I proceeded from the study of scholastic theology to that of philosophy. It was plain
    to me that, in order to discover where the professors of any branch of knowledge have
    erred, one must make a profound study of that science; must equal, nay surpass, those who
    know most of it, so as to penetrate into secrets of it unknown to them. Only by this
    method can they be completely answered, and of this method I can find no trace in the
    theologians of Islam. In theological writings devoted to the refutation of philosophy I
    have only found a tangled mass of phrases full of contradictions and mistakes, and
    incapable of deceiving, I will not say a critical mind, but even the common crowd.
    Convinced that to dream of refuting a doctrine before having thoroughly comprehended it
    was like shooting at an object in the dark, I devoted myself zealously to the study of
    philosophy; but in books only and without the aid of a teacher. I gave up to this work all
    the leisure remaining from teaching and from composing works on law. There were then
    attending my lectures three hundred of the students of Baghdad. With the help of God,
    these studies, carried on in secret, so to speak, put me in a condition to thoroughly
    comprehend philosophical systems within a space of two years. I then spent about a year in
    meditating on these systems after having thoroughly understood them. I turned them over
    and over in my mind 'till they were thoroughly clear of all obscurity. In this manner I
    acquired a complete knowledge of all their subterfuges and subtleties, of what was truth
    and what was illusion in them. 
  I now proceed to give a résumé of these doctrines. I ascertained that they were
    divided into different varieties, and that their adherents might be ranged under diverse
    heads. All, in spite of their diversity, are marked with the stamp of infidelity and
    irreligion, although there is a considerable difference between the ancient and modern,
    between the first and last of these philosophers, according as they have missed or
    approximated to the truth in a greater or less degree. 
   
  Concerning the Philosophical Sects and the Stigma of Infidelity Which Attaches to Them
    All
  The philosophical systems, in spite of their number and variety, may be reduced to
    three: (1) the Materialists; (2) the Naturalists; (3) the Theists. 
  
      (1) The Materialists. They reject an intelligent and omnipotent Creator and
        disposer of the universe. In their view the world exists from all eternity and had no
        author. The animal comes from semen and semen from the animal; so it had always been and
        will always be; those who maintain this doctrine are atheists. 
    (2) The Naturalists. These devote themselves to the study of nature and of the
      marvelous phenomena of the animal and vegetable world. Having carefully analyzed animal
      organs with the help of anatomy, struck with the wonders of God's work and with the wisdom
      therein revealed, they are forced to admit the existence of a wise Creator who knows the
      end and purpose of everything. And certainly no one can study anatomy and the wonderful
      mechanism of living things without being obliged to confess the profound wisdom of him who
      has framed the bodies of animals and especially of man. But carried away by their natural
      researches they believed that the existence of a being absolutely depended upon the proper
      equilibrium of its organism. According to them, as the latter perishes and is destroyed,
      so is the thinking faculty which is bound up with it; and as they assert that the
      restoration of a thing once destroyed to existence is unthinkable, they deny the
      immortality of the soul. Consequently they deny heaven, hell, resurrection, and judgment.
      Acknowledging neither a recompense for good deeds nor a punishment for evil ones, they
      fling off all authority and plunge into sensual pleasures with the avidity of brutes.
      These also ought to be called atheists, for the true faith depends not only on the
      acknowledgment of God, but of his Apostle and of the day of judgment. And although they
      acknowledge God and his attributes, they deny a judgment to come. 
    (3) The Theists. Among them should be reckoned Socrates, who was the teacher of
      Plato as Plato was of Aristotle. This latter drew up for his disciples the rules of logic,
      organized the sciences, elucidated what was formerly obscure, and expounded what had not
      been understood. This school refuted the systems of the two others, i.e., the
      Materialists and Naturalists; but in exposing their mistaken and perverse beliefs, they
      made use of arguments which they should not. "God suffices to protect the faithful in
      war" (Qur'an, xxxiii. 25). 
  
  Aristotle also contended with success against the theories of Plato, Socrates, and the
    theists who had preceded him, and separated himself entirely from them; but he could not
    eliminate from his doctrine the stains of infidelity and heresy which disfigure the
    teaching of his predecessors. We should therefore consider them all as unbelievers, as
    well as the so-called Muslim philosophers, such as Ibn Sina [Avicenna] and Al Farabi, who
    have adopted their systems. 
  Let us, however, acknowledge that among Muslim philosophers none has better interpreted
    the doctrine of Aristotle than the latter. What others have handed down as his teaching is
    full of error, confusion, and obscurity adapted to disconcert the reader. The
    unintelligible can neither be accepted nor rejected. The philosophy of Aristotle, all
    serious knowledge of which we owe to the translation of these two learned men, may be
    divided into three portions: the first contains matter justly chargeable with impiety, the
    second is tainted with heresy, and the third we are obliged to reject absolutely. We
    proceed to details: 
   
  Divisions of the Philosophic Sciences
  These sciences, in relation to the aim we have set before us, may be divided into six
    sections: 
  (1) Mathematics; (2) Logic; (3) Physics; (4) Metaphysics; (5) Politics; (6) Moral
    Philosophy. 
  
      (1) Mathematics. Mathematics comprises the knowledge of calculation, geometry,
        and cosmography: it has no connection with the religious sciences, and proves nothing for
        or against religion; it rests on a foundation of proofs which, once known and understood,
        can not be refuted. Mathematics tend, however, to produce two bad results. The first is
        this: Whoever studies this science admires the subtlety and clearness of its proofs. His
        confidence in philosophy increases, and he thinks that all its departments are capable of
        the same clearness and solidity of proof as mathematics. But when he hears people speak of
        the unbelief and impiety of mathematicians, of their professed disregard for the Divine
        law, which is notorious, it is true that, out of regard for authority, he echoes these
        accusations, but he says to himself at the same time that, if there was truth in religion,
        it would not have escaped those who have displayed so much keenness of intellect in the
        study of mathematics. 
    Next, when he becomes aware of the unbelief and rejection of religion on the part of
      these learned men, he concludes that to reject religion is reasonable. How many of such
      men gone astray I have met whose sole argument was that just mentioned. And supposing one
      puts to them the following objection: "It does not follow that a man who excels in
      one branch of knowledge excels in all others, nor that he should be equally versed in
      jurisprudence, theology, and medicine. It is possible to be entirely ignorant of
      metaphysics, and yet to be an excellent grammarian. There are past masters in every
      science who are entirely ignorant of other branches of knowledge. The arguments of the
      ancient philosophers are rigidly demonstrative in mathematics and only conjectural in
      religious questions. In order to ascertain this one must proceed to a thorough examination
      of the matter." Supposing, I say, one makes the above objection to these "apes
      of unbelief," they find it distasteful. Falling a prey to their passions, to a
      besotted vanity, and the wish to pass for learned men, they persist in maintaining the
      preeminence of mathematicians in all branches of knowledge. This is a serious evil, and
      for this reason those who study mathematics should be checked from going too far in their
      researches. For though far removed as it may be from the things of religion, this study,
      serving as it does as an introduction to the philosophic systems, casts over religion its
      malign influence. It is rarely that a man devotes himself to it without robbing himself of
      his faith and casting off the restraints of religion. 
    The second evil comes from the sincere but ignorant Muslims who thinks the best way to
      defend religion is by rejecting all the exact sciences. Accusing their professors of being
      astray, he rejects their theories of the eclipses of the sun and moon, and condemns them
      in the name of religion. These accusations are carried far and wide, they reach the ears
      of the philosopher who knows that these theories rest on infallible proofs; far from
      losing confidence in them, he believes, on the contrary, that Islam has ignorance and the
      denial of scientific proofs for its basis, and his devotion to philosophy increases with
      his hatred to religion. 
    It is therefore a great injury to religion to suppose that the defense of Islam
      involves the condemnation of the exact sciences. The religious law contains nothing which
      approves them or condemns them, and in their turn they make no attack on religion. The
      words of the Prophet, "The sun and the moon are two signs of the power of God; they
      are not eclipsed for the birth or the death of any one; when you see these signs take
      refuge in prayer and invoke the name of God"---these words, I say, do not in any way
      condemn the astronomical calculations which define the orbits of these two bodies, their
      conjunction and opposition according to particular laws. But as for the so-called
      tradition, "When God reveals himself in anything, he abases himself thereto," it
      is unauthentic, and not found in any trustworthy collection of the traditions. Such is the
      bearing and the possible danger of mathematics. 
    (2) Logic. This science, in the same manner, contains nothing for or against
      religion. Its object is the study of different kinds of proofs and syllogisms, the
      conditions which should hold between the premises of a proposition, the way to combine
      them, the rules of a good definition, and the art of formulating it. For knowledge
      consists of conceptions which spring from a definition or of convictions which arise from
      proofs. There is therefore nothing censurable in this science, and it is laid under
      contribution by theologians as well as by philosophers. The only difference is that the
      latter use a particular set of technical formulas and that they push their divisions and
      subdivisions further. 
    It may be asked, What, then, this has to do with the grave questions of religion, and
      on what ground opposition should be offered to the methods of logic? The objector, it will
      be said, can only inspire the logician with an unfavorable opinion of the intelligence and
      faith of his adversary, since the latter's faith seems to be based upon such objections.
      But, it must be admitted, logic is liable to abuse. Logicians demand in reasoning certain
      conditions which lead to absolute certainty, but when they touch on religious questions
      they can no longer postulate these conditions, and ought therefore to relax their habitual
      rigor. It happens, accordingly, that a student who is enamored of the evidential methods
      of logic, hearing his teachers accused of irreligion, believes that this irreligion
      reposes on proofs as strong as those of logic, and immediately, without attempting the
      study of metaphysics, shares their mistake. This is a serious disadvantage arising from
      the study of logic. 
    (3) Physics. The object of this science is the study of the bodies which compose
      the universe: the sky and the stars, and, here below, simple elements such as air, earth,
      water, fire, and compound bodies-animals, plants, and minerals the reasons of their
      changes, developments, and intermixture. By the nature of its researches it is closely
      connected with the study of medicine, the object of which is the human body, its principal
      and secondary organs, and the law which governs their changes. Religion having no fault to
      find with medical science, can not justly do so with physical, except on some special
      matters which we have mentioned in the work entitled, The Destruction of the
        Philosophers. Besides these primary questions, there are some subordinate ones
      depending on them, on which physical science is open to objection. But all physical
      science rests, as we believe, on the following principle: Nature is entirely subject to
      God; incapable of acting by itself, it is an instrument in the hand of the Creator; sun,
      moon, stars, and elements are subject to God and can produce nothing of themselves. In a
      word, nothing in nature can act spontaneously and apart from God. 
    (4) Metaphysics. This is the fruitful breeding-ground of the errors of
      philosophers. Here they can no longer satisfy the laws of rigorous argumentation such as
      logic demands, and this is what explains the disputes which arise between them in the
      study of metaphysics. The system most closely akin to the system of the Muhammadan doctors
      is that of Aristotle as expounded to us by Farabi and Avicenna. The sum total of their
      errors can be reduced to twenty propositions: three of them are irreligious, and the other
      seventeen heretical. It was in order to combat their system that we wrote the work, Destruction
        of the Philosophers. The three propositions in which they are opposed to all the
      doctrines of Islam are the following: (a) Bodies do not rise again; spirits alone will be
      rewarded or punished; future punishments will be therefore spiritual and not physical.
      They are right in admitting spiritual punishments, for there will be such; but they are
      wrong in rejecting physical punishments, and contradicting in this manner the assertions
      of the Divine Law. (b) "God takes cognizance of universals, not of specials."
      This is manifestly irreligious. The Qur'an asserts truly, "Not an atom's weight in
      heaven or earth can escape his knowledge" (Qur'an x. 62) . (c) They maintain that the
      universe exists from all eternity and will never end. None of these propositions has ever
      been admitted by Muslims. Besides this, they deny that God has attributes, and maintain
      that he knows by his essence only and not by means of any attribute accessory to his
      essence. In this point they approach the doctrine of the Mutazilites, doctrines which we
      are not obliged to condemn as irreligious. On the contrary, in our work entitled,
      "Criteria of the Differences Which Divide Islam from Atheism," we have proved
      the wrongness of those who accuse of irreligion everything which is opposed to their way
      of looking at things. 
    (5) Political Science. The professors of this confine themselves to drawing up
      the rules which regulate temporal matters and the royal power. They have borrowed their
      theories on this point from the books which God has revealed to his prophets and from the
      sentences of ancient sages, gathered by tradition. 
    (6) Moral Philosophy. The professors of this occupy themselves with defining the
      attributes and qualities of the soul, grouping them according to genus and species, and
      pointing out the way to moderate and control them. They have borrowed this system from the
      Sufis. These devout men, who are always engaged in invoking the name of God, in combating
      concupiscence and following the way of God by renouncing the pleasures of this world, have
      received, while in a state of ecstasy, revelations regarding the qualities of the soul,
      its defects and its evil inclinations. These revelations they have published, and the
      philosophers making use of them have introduced them into their own systems in order to
      embellish and give currency to their falsehoods. In the times of the philosophers, as at
      every other period, there existed some of these fervent mystics. God does not deprive this
      world of them, for they are its sustainers, and they draw down to it the blessings of
      heaven according to the tradition: "It is by them that you obtain rain; it is by them
      that you receive your subsistence." Such were "the Companions of the Cave,"
      who lived in ancient times, as related by the Qur'an (xviii.). Now this mixture of moral
      and philosophic doctrine with the words of the Prophet and those of the Sufis gives rise
      to two dangers, one for the upholder of those doctrines, the other for their opponent. 
  
  The danger for their opponent is serious. A narrow-minded man, finding in their
    writings moral philosophy mixed with unsupported theories, believes that he ought to
    entirely reject them and to condemn those who profess them. Having only heard them from
    their mouth he does not hesitate in his ignorance to declare them false because those who
    teach them are in error. It is as if some one was to reject the profession of faith made
    by Christians, "There is only one God and Jesus is his prophet," simply because
    it proceeds from Christians and without inquiring whether it is the profession of this
    creed or the denial of Mohammed's prophetic mission which makes Christians infidels. Now,
    if they are only infidels because of their rejection of our Prophet, we are not entitled
    to reject those of their doctrines which do not wear the stamp of infidelity. In a word,
    truth does not cease to be true because it is found among them. Such, however, is the
    tendency of weak minds: they judge the truth according to its professors instead of
    judging its professors by the standard of the truth. But a liberal spirit will take as its
    guide this maxim of the prince of believers, Ali the son of Abu Talib: "Do not seek
    for the truth by means of men; find first the truth and then you will recognize those who
    follow it." This is the procedure followed by a wise man. Once in possession of the
    truth he examines the basis of various doctrines which come before him, and when he has
    found them true, he accepts them without troubling himself whether the person who teaches
    them is sincere or a deceiver. Much rather, remembering how gold is buried in the bowels
    of the earth, he endeavors to disengage the truth from the mass of errors in which it is
    engulfed. The skilled coin-assayer plunges without hesitation his hand into the purse of
    the coiner of false money, and relying on experience, separates good coins from bad. It is
    the ignorant rustic, and not the experienced assayer, who will ask why we should have
    anything to do with a false coiner. The unskilled swimmer must be kept away from the
    seashore, not the expert in diving. The child, not the charmer, must be forbidden to
    handle serpents. 
  As a matter of fact, men have such a good opinion of themselves, of their mental
    superiority and intellectual depth; they believe themselves so skilled in discerning the
    true from the false, the path of safety from those of error, that they should be forbidden
    as much as possible the perusal of philosophic writings, for though they sometimes escape
    the danger just pointed out, they can not avoid that which we are about to indicate. 
  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." 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 Qur'an 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 Qur'an 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 "Treatise 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 this 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. 
  As it was more easy to learn their doctrine than to practice it, I studied first of all
    those of their books which contain it: "The Nourishment of Hearts," by Abu Talib
    of Mecca, the works of Hareth el Muhasibi, and the fragments which still remain of Junaid,
    Shibli, Abu Yezid Bustami, and other leaders (whose souls may God sanctify). I acquired a
    thorough knowledge of their researches, and I learned all that was possible to learn of
    their methods by study and oral teaching. It became clear to me that the last stage could
    not be reached by mere instruction, but only by transport, ecstasy, and the transformation
    of the moral being. 
  To define health and satiety, to penetrate their causes and conditions, is quite
    another thing from being well and satisfied. To define drunkenness, to know that it is
    caused by vapors which rise from the stomach and cloud the seat of intelligence, is quite
    a different thing to being drunk. The drunken man has no idea of the nature of
    drunkenness, just because he is drunk and not in a condition to understand anything, while
    the doctor, not being under the influence of drunkenness knows its character and laws. Or
    if the doctor fall ill, he has a theoretical knowledge of the health of which he is
    deprived. 
  In the same way there is a considerable difference between knowing renouncement,
    comprehending its conditions and causes, and practicing renouncement and detachment from
    the things of this world. I saw that Sufism consists in experiences rather than in
    definitions, and that what I was lacking belonged to the domain, not of instruction, but
    of ecstasy and initiation. 
  The researches to which I had devoted myself, the path which I had traversed in
    studying religious and speculative branches of knowledge, had given me a firm faith in
    three things---God, Inspiration, and the Last Judgment. These three fundamental articles
    of belief were confirmed in me, not merely by definite arguments, but by a chain of
    causes, circumstances, and proofs which it is impossible to recount. I saw that one can
    only hope for salvation by devotion and the conquest of one's passions, a procedure which
    presupposes renouncement and detachment from this world of falsehood in order to turn
    toward eternity and meditation on God. Finally, I saw that the only condition of success
    was to sacrifice honors and riches and to sever the ties and attachments of worldly life. 
  Coming seriously to consider my state, I found myself bound down on all sides by these
    trammels. Examining my actions, the most fair-seeming of which were my lecturing and
    professorial occupations, I found to my surprise that I was engrossed in several studies
    of little value, and profitless as regards my salvation. I probed the motives of my
    teaching and found that, in place of being sincerely consecrated to God, it was only
    actuated by a vain desire of honor and reputation. I perceived that I was on the edge of
    an abyss, and that without an immediate conversion I should be doomed to eternal fire. In
    these reflections I spent a long time. Still a prey to uncertainty, one day I decided to
    leave Baghdad and to give up everything; the next day I gave up my resolution. I advanced
    one step and immediately relapsed. In the morning I was sincerely resolved only to occupy
    myself with the future life; in the evening a crowd of carnal thoughts assailed and
    dispersed my resolutions. On the one side the world kept me bound to my post in the chains
    of covetousness, on the other side the voice of religion cried to me, "Up! Up! Thy
    life is nearing its end, and thou hast a long journey to make. All thy pretended knowledge
    is naught but falsehood and fantasy. If thou dost not think now of thy salvation, when
    wilt thou think of it? If thou dost not break thy chains today, when wilt thou break
    them?" Then my resolve was strengthened, I wished to give up all and fee; but the
    Tempter, returning to the attack, said, "You are suffering from a transitory feeling;
    don't give way to it, for it will soon pass. If you obey it, if you give up this fine
    position, this honorable post exempt from trouble and rivalry, this seat of authority safe
    from attack, you will regret it later on without being able to recover it." 
  Thus I remained, torn asunder by the opposite forces of earthly passions and religious
    aspirations, for about six months from the month Rajab of the year A.D. 1096. At the close
    of them my will yielded and I gave myself up to destiny. God caused an impediment to chain
    my tongue and prevented me from lecturing. Vainly I desired, in the interest of my pupils,
    to go on with my teaching, but my mouth became dumb. The silence to which I was condemned
    cast me into a violent despair; my stomach became weak; I lost all appetite; I could
    neither swallow a morsel of bread nor drink a drop of water. 
  The enfeeblement of my physical powers was such that the doctors, despairing of saving
    me, said, "The mischief is in the heart, and has communicated itself to the whole
    organism; there is no hope unless the cause of his grievous sadness be arrested." 
  Finally, conscious of my weakness and the prostration of my soul, I took refuge in God
    as a man at the end of himself and without resources. "He who hears the wretched when
    they cry" (Qur'an, xxvii. 63) deigned to hear me; He made easy to me the sacrifice of
    honors, wealth, and family. I gave out publicly that I intended to make the pilgrimage to
    Mecca, while I secretly resolved to go to Syria, not wishing that the Caliph (may God
    magnify him) or my friends should know my intention of settling in that country. I made
    all kinds of clever excuses for leaving Baghdad with the fixed intention of not returning
    thither. The Imams of Iraq criticized me with one accord. Not one of them could admit that
    this sacrifice had a religious motive, because they considered my position as the highest
    attainable in the religious community. "Behold how far their knowledge goes!"
    (Qur'an, liii. 31). All kinds of explanations of my conduct were forthcoming. Those who
    were outside the limits of Iraq attributed it to the fear with which the Government
    inspired me. Those who were on the spot and saw how the authorities wished to detain me,
    their displeasure at my resolution and my refusal of their request, said to themselves,
    "It is a calamity which one can only impute to a fate which has befallen the Faithful
    and Learning!" 
  At last I left Baghdad, giving up all my fortune. Only, as lands and property in Iraq
    can afford an endowment for pious purposes, I obtained a legal authorization to preserve
    as much as was necessary for my support and that of my children; for there is surely
    nothing more lawful in the world than that a learned man should provide sufficient to
    support his family. I then betook myself to Syria, where I remained for two years, which I
    devoted to retirement, meditation, and devout exercises. I only thought of
    self-improvement and discipline and of purification of the heart by prayer in going
    through the forms of devotion which the Sufis had taught me. I used to live a solitary
    life in the Mosque of Damascus, and was in the habit of spending my days on the minaret
    after closing the door behind me. 
  From thence I proceeded to Jerusalem, and every day secluded myself in the Sanctuary of
    the Rock. After that I felt a desire to accomplish the pilgrimage, and to receive a full
    effusion of grace by visiting Mecca, Medina, and the tomb of the Prophet. After visiting
    the shrine of the Friend of God (Abraham), I went to the Hedjaz. Finally, the longings of
    my heart and the prayers of my children brought me back to my country, although I was so
    firmly resolved at first never to revisit it. At any rate I meant, if I did return, to
    live there solitary and in religious meditation; but events, family cares, and
    vicissitudes of life changed my resolutions and troubled my meditative calm. However
    irregular the intervals which I could give to devotional ecstasy, my confidence in it did
    not diminish; and the more I was diverted by hindrances, the more steadfastly I returned
    to it. 
  Ten years passed in this manner. During my successive periods of meditation there were
    revealed to me things impossible to recount. All that I shall say for the edification of
    the reader is this: I learned from a sure source that the Sufis are the true pioneers on
    the path of God; that there is nothing more beautiful than their life, nor more
    praiseworthy than their rule of conduct, nor purer than their morality. The intelligence
    of thinkers, the wisdom of philosophers, the knowledge of the most learned doctors of the
    law would in vain combine their efforts in order to modify or improve their doctrine and
    morals; it would be impossible. With the Sufis, repose and movement, exterior or interior,
    are illumined with the light which proceeds from the Central Radiance of Inspiration. And
    what other light could shine on the face of the earth? In a word, what can one criticize
    in them? To purge the heart of all that does not belong to God is the first step in their
    cathartic method. The drawing up of the heart by prayer is the key-stone of it, as the cry
    "Allahu Akbar' (God is great) is the key-stone of prayer, and the last stage is the
    being lost in God. I say the last stage, with reference to what may be reached by an
    effort of will; but, to tell the truth, it is only the first stage in the life of
    contemplation, the vestibule by which the initiated enter. 
  From the time that they set out on this path, revelations commence for them. They come
    to see in the waking state angels and souls of prophets; they hear their voices and wise
    counsels. By means of this contemplation of heavenly forms and images they rise by degrees
    to heights which human language can not reach, which one can not even indicate without
    falling into great and inevitable errors. The degree of proximity to Deity which they
    attain is regarded by some as intermixture of being (haloul), by others as
    identification (ittihad), by others as intimate union (wasl). But all these
    expressions are wrong, as we have explained in our work entitled, "The Chief
    Aim." Those who have reached that stage should confine themselves to repeating the
    verse---What I experience I shall not try to say; Call me happy, but ask me no more. In
    short, he who does not arrive at the intuition of these truths by means of ecstasy, knows
    only the name of inspiration. The miracles wrought by the saints are, in fact, merely the
    earliest forms of prophetic manifestation. Such was the state of the Apostle of God, when,
    before receiving his commission, he retired to Mount Hira to give himself up to such
    intensity of prayer and meditation that the Arabs said: "Mohammed is become enamored
    of God." 
  This state, then, can be revealed to the initiated in ecstasy, and to him who is
    incapable of ecstasy, by obedience and attention, on condition that he frequents the
    society of Sufis till he arrives, so to speak, at an imitative initiation. Such is the
    faith which one can obtain by remaining among them, and intercourse with them is never
    painful. 
  But even when we are deprived of the advantage of their society, we can comprehend the
    possibility of this state (revelation by means of ecstasy) by a chain of manifest proofs.
    We have explained this in the treatise entitled "Marvels of the Heart," which
    forms part of our work, 'The Revival of the Religious Sciences." The certitude
    derived from proofs is called "knowledge"; passing into the state we describe is
    called "transport"; believing the experience of others and oral transmission is
    "faith." Such are the three degrees of knowledge, as it is written, "The
    Lord will raise to different ranks those among you who have believed and those who have
    received knowledge from him" (Qur'an, lviii. 12). 
  But behind those who believe comes a crowd of ignorant people who deny the reality of
    Sufism, hear discourses on it with incredulous irony, and treat as charlatans those who
    profess it. To this ignorant crowd the verse applies: "There are those among them who
    come to listen to thee, and when they leave thee, ask of those who have received
    knowledge, 'What has he just said?' These are they whose hearts God has sealed up with
    blindness and who only follow their passions. Among the number of convictions which I owe
    to the practice of the Sufi rule is the knowledge of the true nature of inspiration. This
    knowledge is of such great importance that I proceed to expound it in detail. 
   
  The Reality of Inspiration: Its Importance for the Human Race
  The substance of man at the moment of its creation is a simple monad, devoid of
    knowledge of the worlds subject to the Creator, worlds whose infinite number is only known
    to him, as the Qur'an says: "Only thy Lord knoweth the number of his armies." 
  Man arrives at this knowledge by the aid of his perceptions; each of his senses is
    given him that he may comprehend the world of created things, and by the term
    "world" we understand the different species of creatures. The first sense
    revealed to man is touch, by means of which he perceives a certain group of
    qualities---heat, cold, moist, dry. The sense of touch does not perceive colors and forms,
    which are for it as though they did not exist. Next comes the sense of sight, which makes
    him acquainted with colors and forms; that is to say, with that which occupies the highest
    rank in the world of sensation. The sense of hearing succeeds, and then the senses of
    smell and taste. 
  When the human being can elevate himself above the world of sense, toward the age of
    seven, he receives the faculty of discrimination; he enters then upon a new phase of
    existence and can experience, thanks to this faculty, impressions, superior to those of
    the senses, which do not occur in the sphere of sensation. 
  He then passes to another phase and receives reason, by which he discerns things
    necessary, possible, and impossible; in a word, all the notions which he could not combine
    in the former stages of his existence. But beyond reason and at a higher level by a new
    faculty of vision is bestowed upon him, by which he perceives invisible things, the
    secrets of the future and other concepts as inaccessible to reason as the concepts of
    reason are inaccessible to mere discrimination and what is perceived by discrimination to
    the senses. Just as the man possessed only of discrimination rejects and denies the
    notions acquired by reason, so do certain rationalists reject and deny the notion of
    inspiration. It is a proof of their profound ignorance; for, instead of argument, they
    merely deny inspiration as a sphere unknown and possessing no real existence. In the same
    way, a man blind from birth, who knows neither by experience nor by information what
    colors and forms are, neither knows nor understands them when some one speaks of them to
    him for the first time. 
  God, wishing to render intelligible to men the idea of inspiration, has given them a
    kind of glimpse of it in sleep. In fact, man perceives while asleep the things of the
    invisible world either clearly manifest or under the veil of allegory to be subsequently
    lifted by divination. If, however, one was to say to a person who had never himself
    experienced these dreams that, in a state of lethargy resembling death and during the
    complete suspension of sight, hearing, and all the senses, a man can see the things of the
    invisible world, this person would exclaim, and seek to prove the impossibility of these
    visions by some such argument as the following: "The sensitive faculties are the
    causes of perception. Now, if one can perceive certain things when one is in full
    possession of these faculties, how much more is their perception impossible when these
    faculties are suspended." 
  The falsity of such an argument is shown by evidence and experience. For in the same
    way as reason constitutes a particular phase of existence in which intellectual concepts
    are perceived which are hidden from the senses, similarly, inspiration is a special state
    in which the inner eye discovers, revealed by a celestial light, mysteries out of the
    reach of reason. The doubts which are raised regarding inspiration relate (1) to its
    possibility, (2) to its real and actual existence, (3) to its manifestation in this or
    that person. 
  To prove the possibility of inspiration is to prove that it belongs to a category of
    branches of knowledge which can not be attained by reason. It is the same with medical
    science and astronomy. He who studies them is obliged to recognize that they are derived
    solely from the revelation and special grace of God. Some astronomical phenomena only
    occur once in a thousand years; how then can we know them by experience? 
  We may say the same of inspiration, which is one of the branches of intuitional
    knowledge. Further, the perception of things which are beyond the attainment of reason is
    only one of the features peculiar to inspiration, which possesses a great number of
    others. The characteristic which we have mentioned is only, as it were, a drop of water in
    the ocean, and we have mentioned it because people experience what is analogous to it in
    dreams and in the sciences of medicine and astronomy. These branches of knowledge belong
    to the domain of prophetic miracles, and reason can not attain to them. 
  As to the other characteristics of inspiration, they are only revealed to adepts in
    Sufism and in a state of ecstatic transport. The little that we know of the nature of
    inspiration we owe to the kind of likeness to it which we find in sleep; without that we
    should be incapable of comprehending it, and consequently of believing in it, for
    conviction results from comprehension. The process of initiation into Sufism exhibits this
    likeness to inspiration from the first. There is in it a kind of ecstasy proportioned to
    the condition of the person initiated, and a degree of certitude and conviction which can
    not be attained by reason. This single fact is sufficient to make us believe in
    inspiration. 
  We now come to deal with doubts relative to the inspiration of a particular prophet. We
    shall not arrive at certitude on this point except by ascertaining, either by ocular
    evidence or by reliable tradition the facts relating to that prophet. When we have
    ascertained the real nature of inspiration and proceed to the serious study of the Qur'an
    and the traditions, we shall then know certainly that Mohammed is the greatest of
    prophets. After that we should fortify our conviction by verifying the truth of his
    preaching and the salutary effect which it has upon the soul. We should verify in
    experience the truth of sentences such as the following: "He who makes his conduct
    accord with his knowledge receives from God more knowledge"; or this, "God
    delivers to the oppressor him who favors injustice"; or again, "Whosoever when
    rising in the morning has only one anxiety (to please God), God will preserve him from all
    anxiety in this world and the next." 
  When we have verified these sayings in experience thousands of times, we shall be in
    possession of a certitude on which doubt can obtain no hold. Such is the path we must
    traverse in order to realize the truth of inspiration. It is not a question of finding out
    whether a rod has been changed into a serpent, or whether the moon has been split in two.
    If we regard miracles in isolation, without their countless attendant circumstances, we
    shall be liable to confound them with magic and falsehood, or to regard them as a means of
    leading men astray, as it is written, "God misleads and directs as he chooses"
    (Qur'an, xxxv. 9); we shall find ourselves involved in all the difficulties which the
    question of miracles raises. If, for instance, we believe that eloquence of style is a
    proof of inspiration, it is possible that an eloquent style composed with this object may
    inspire us with a false belief in the inspiration of him who wields it. The supernatural
    should be only one of the constituents which go to form our belief, without our placing
    too much reliance on this or that detail. We should rather resemble a person who, learning
    a fact from a group of people, can not point to this or that particular man as his
    informant, and who, not distinguishing between them, can not explain precisely how his
    conviction regarding the fact has been formed. 
  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 favor 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 recognizes at the same time that there are in that sphere things
    which reason can not 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. 
  Again, if it were to be said to one of them, "Is it possible that there is in the
    world a thing as small as a grain, which being carried into a city can destroy it and
    afterward destroy itself so that nothing remains either of the city or of itself?"
    "Certainly," he would exclaim, "it is impossible and ridiculous."
    Such, however, is the effect of fire, which would certainly be disputed by one who had not
    witnessed it with his own eyes. Now, the refusal to believe in the mysteries of the other
    life is of the same kind. As to the fourth cause of the spread of unbelief---the decay of
    faith owing to the bad example set by learned men---there are three ways of checking it. 
  
      (1) One can answer thus: "The learned man whom you accuse of disobeying the divine
        law knows that he disobeys, as you do when you drink wine or exact usury or allow yourself
        in evil-speaking, lying, and slander. You know your sin and yield to it, not through
        ignorance, but because you are mastered by concupiscence. The same is the case with the
        learned man. How many believe in doctors who do not abstain from fruit and cold water when
        strictly forbidden them by a doctor! That does not prove that those things are not
        dangerous, or that their faith in the doctor was not solidly established. Similar errors
        on the part of learned men are to be imputed solely to their weakness."
    (2) Or again, one may say to a simple and ignorant man: "The learned man reckons
      upon his knowledge as a viaticum for the next life. He believes that his knowledge will
      save him and plead in his favor, and that his intellectual superiority will entitle him to
      indulgence; lastly, that if his knowledge increases his responsibility, it may also
      entitle him to a higher degree of consideration. All that is possible; and even if the
      learned man has neglected practice, he can at any rate produce proofs of his knowledge.
      But you, poor, witless one, if, like him, you neglect practice, destitute as you are of
      knowledge, you will perish without anything to plead in your favor." 
    (3) Or one may answer, and this reason is the true one: "The truly learned man
      only sins through carelessness, and does not remain in a state of impenitence. For real
      knowledge shows sin to be a deadly poison, and the other world to be superior to this.
      Convinced of this truth, man ought not to exchange the precious for the vile. But the
      knowledge of which we speak is not derived from sources accessible to human diligence, and
      that is why progress in mere worldly knowledge renders the sinner more hardened in his
      revolt against God." 
  
  True knowledge, on the contrary, inspires in him who is initiate in it more fear and
    more reverence, and raises a barrier of defense between him and sin. He may slip and
    stumble, it is true, as is inevitable with one encompassed by human infirmity, but these
    slips and stumbles will not weaken his faith. The true Moslem succumbs occasionally to
    temptation, but he repents and will not persevere obstinately in the path of error. 
  I pray God the Omnipotent to place us in the ranks of his chosen, among the number of
    those whom he directs in the path of safety, in whom he inspires fervor lest they forget
    him; whom he cleanses from all defilement, that nothing may remain in them except himself;
    yea, of those whom he indwells completely, that they may adore none beside him.