The Sufis have never given out any special doctrines; they only consider moral conceptions, so they never ask their mureeds to accept any doctrines. The Sufi does this because he considers that his sole work is to blow upon a little spark or flame in order to make it develop into a large flame; and then this flame will show you the path. The Sufi does not interfere and say, "This is the doctrine you must accept, because I believe this or that", for instance about the life after death, the continuity of life. The Sufi master does not concern himself with the laws of nature and assert that this or that doctrine is the truth, or that this or that speculation is the truth. All he says is, "Find it out for yourself." He says, "My work is only to tell you in what way the faculty of revelation can be awakened. Do this practice, and this faculty will be awakened; you will then see for yourself. Then, whatever you see for yourself, you will believe."