Nature has very many covers; its activity covers and uncovers it. At every covering and uncovering, it is natural that the belief of the individual should change. Therefore when a Sufi is asked, "Do you believe in this, or that?" he says, "My belief is for me, yours is for you, there is no faith to which I give my unchanging belief, nor any belief that I reject without having investigated it." If you are asked, "What belief does the Sufi teach?" you may say, "No belief, but he helps the pupil to seek and find within himself his own belief."