When a person has been alone for some time, he begins to move. He moves his foot or his hand, or he drums on the table. He wants to feel that he is alive, and the consciousness realizes that it is alive by its activity, the activity of the body and of the mind. When the activity of the body is made to cease and the activity of the mind is stopped, then the consciousness has a chance of realizing that it is alive without the life of the body and of the mind. When the body is brought under control, and when the mind is controlled so that we can keep it on one thought as long as we like and make it blank as long as we like, then the soul, which is imprisoned in the body, is set free; it is not bound to mind and body. The whole world is open for it.