When the Yogi has succeeded in preventing the organs from taking the forms of external objects, and in making them remain one with the mind-stuff, then comes perfect control of the organs. When the organs are perfectly under control, every muscle and nerve will be under control, because the organs are the centres of all the sensations, and of all actions. These organs are divided into organs of work and organs of sensation. When the organs are controlled, the Yogi can control all feeling and doing; the whole of the body comes under his control. Then alone one begins to feel joy in being born; then one can truthfully say, "Blessed am I that I was born." When that control of the organs is obtained, we feel how wonderful this body really is.