"In the name of God, the Merciful, the Compassionate. Praise be to God by the praise of whom every written or spoken discourse is opened! And blessings on Muḥammad, the Elect, the Prophet and Apostle, as well as on his family and his companions who lead us forth from error! To proceed: You have asked me, O my brother in religion, to explain to you the hidden meanings and the ultimate goal of the sciences, and the secret bane of the different doctrines, and their inmost depths. You wish me to relate all that I have endured in seeking to recover the truth from amidst the confusion of sects with diverse ways and paths, and how I have dared to raise myself from the abyss of blind belief in authority to the height of discernment. You desire to know what benefits I have derived in the first place from Scholastic Theology, and what I have appropriated, in the second place, from the methods of the Ta‘límites[720] who think that truth can be attained only by submission to the authority of an Imám; and thirdly, my reasons for spurning the systems of philosophy; and, lastly, why I have accepted the tenets of Ṣúfiism: you are anxious, in short, that I should impart to you the essential truths which I have learned in my repeated examination of the (religious) opinions of mankind." In a very interesting passage, which has been translated by Professor Browne, Ghazálí tells how from his youth upward he was possessed with an intense thirst for knowledge, which impelled him to study every form of religion and philosophy, and to question all whom he met concerning the nature and meaning of their belief.[721] But when he tried to distinguish the true from the false, he found no sure test. He could not trust the evidence of his senses. The eye sees a shadow and declares it to be without movement; or a star, and deems it no larger than a piece of gold. If the senses thus deceive, may not the mind do likewise? Perhaps our life is a dream full of phantom thoughts which we mistake for realities--until the awakening comes, either in moments of ecstasy or at death. "For two months," says Ghazálí, "I was actually, though not avowedly, a sceptic." Then God gave him light, so that he regained his mental balance and was able to think soundly. He resolved that this faculty must guide him to the truth, since blind faith once lost never returns. Accordingly, he set himself to examine the foundations of belief in four classes of men who were devoted to the search for truth, namely, Scholastic Theologians, Ismá‘ílís (_Bátiniyya_), Philosophers, and Ṣúfís. For a long while he had to be content with wholly negative results. Scholasticism was, he admitted, an excellent purge against heresy, but it could not cure the disease from which he was suffering. As for the philosophers, all of them--Materialists (_Dahriyyún_), Naturalists (_Ṭabí‘iyyún_), and Theists (_Iláhiyyún_)--"are branded