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 Koran 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 Koran without investigating the nature of his belief, nor a partizan 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 Moslems 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 Zoroastrian," 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.