THE NATURE OF SUFISM 9 from the Prophet, but, as there is no esotericism without a certain inspiration, the doctrine is continually mani- fested afresh by the mouth of masters. Oral teaching is moreover superior, since it is direct and ‘ personal,” to what can be gleaned from writings. Writings play only a secondary part as a preparation, a complement or an aid to memory and for this reason the historical conti- nuity of Sufi teaching sometimes eludes the researches of scholars. As for initiation in Sufism, this consists in the transmission of a spiritual influence (barakah) and must be conferred by a representative of a ““chain” reaching back to the Prophet. In most cases it is transmitted by the master who also' communicates the method and confers the means of spiritual concentration that are appropriate to the aptitudes of the disciple. The general framework of the method is the Islamic Law, although there have always been isolated Sufis who, by reason of the exceptional nature of their contemplative state, no longer took part in the ordinary ritual of Islam. In order to forestall any objection which might be raised on this account to what had already been said about the Muhammadan origin of Sufism it must here be clearly stated that the spiritual supports on which the principal methods of Sufism are based, and which can in certain circumstances take the place of the ordinary ritual of Islam, appear as the very keystones of the whole Islamic symbolism ; it is indeed in this sense that they were given by the Prophet himself. Initiation generally takes the form of a pact (bay‘ah) v L2