One may perhaps think that by spirituality it is meant that one must learn something which one did not know before, that one must become extraordinarily good, that one must acquire some unusual powers or have experiences of a supernatural kind. None of these things does Sufism promise, although on the path of the Sufi nothing is too wonderful for him. All these things, and even more, are within his reach; yet that is not the Sufi's aim. By the process of Sufism one realizes one's own nature, one's true nature, and thereby one realizes human nature. And by the study of human nature one realizes the nature of life in general. All failures, disappointments, and sorrows are caused by the lack of this realization; all success, happiness, and peace are acquired by the realization of one's own nature.