It is the faculty of the soul to see, and the eyes are its instruments. It is not the instrument that sees, but it is the soul that uses the instrument to see. The eyes I have given as an example, but really the whole body is the instrument of the soul, to get the experience of life. The seeing of the soul through the ears is called hearing, through the tongue tasting. It is the knowing by the soul of the external life; the soul uses different instruments to obtain different experiences.

Between the body and the soul there is another instrument which is recognized by scientists and mystics as inexplicable; that is the mind. The scientists call it the brain, but the brain is but the instrument of the mind, and the mind goes beyond it. Plainly speaking, it may be said that the mind is the instrument of the soul and the body is the instrument of the mind, but both mind and body are the instruments of the soul. Although these instruments give the soul knowledge of things clearly, these instruments at the same time limit the power of the soul.

There are two aspects of sight: One is penetration and the other expansion, i.e., the length and width of the range of sight. Through the eyes of the body one can see a short or a long distance, or have a wide or narrow horizon; but by using the mind as its instrument the soul sees through another mind in the same way as the eye sees across the length and breadth of its range of sight.

When the mind takes the body in order to experience life it limits its experience, for the body is not sufficient; but if the mind were free, it would see further. But, as from childhood man has the habit of using the body as the instrument of the mind, hardly anyone knows how to make use of the mind without the body. And as the soul has always taken the mind as its instrument, it also limits its sight and experience. If the soul could see independently of mind and body, it would see infinitely more.

As it is difficult for the mind to see independently of the body, it is more difficult for the soul to see independently of the mind. Therefore the Sufi tries to make his mind independent of the body, and his soul independent of mind and body. In order to accomplish this different concentrations and practices are given. It is like effacing the external form from the mind, and erasing from the soul the form of the mind. It is this experience which is called Saf .