The Master answered: "I am telling you the interesting story of the Queen, and now thou dost ask an explanation of Yoga. However, I will answer thee. By control of Prana (Vital or Life Force), one may attain that power. One who wishes to attain that power should have a balanced diet: should practice Mudras and Postures. Control of the mind is also necessary as well as the study and ceaseless practice of Yoga. One should have the help of a Spiritual Teacher. One should be free from anger, love and hate. Try to understand the nature of Prana (Vital or Life Force) and control its movements, then you can Master the forces of nature, Sidhi (psychic), and attain liberation.
"There is in the midst of the one hundred Nadis (big vein or nerve), one which is called Kundalini, it is within every being from Brahma to worm. It is like a serpent, and is sleeping as the serpent sleeps in the winter. When the Kundalini
power is aroused, it enables one to master the powers of nature. All other Nadis of the body are connected with the Kundalini. The powers of the Kundalini become useful, through the Light of Wisdom. This power, through meditation becomes meditation, through wisdom becomes wisdom, mind through mind, thought through thought, egoism through egoism.
"This greatest of all powers may easily be controlled, if one masters the Prana. The Prana (Vital or life force) always goes upward, the Apana, (or other vital force) always goes downward. These two vital or life forces cause death of the body. If Prana is brought down, and Apana be permitted to rise and mix in the heart, then disease would leave the body, never to return."
Ram again said to the Master: "Please explain how mental disease can be destroyed."
The Master answered: "Diseases which affect the mind are the first and are not the easiest to heal; those which affect the body may be classed as secondary. The desires which affect the mind are primary diseases; we have sunk thus
far by absence of Wisdom, and lack of Mastery over ourselves. We are under the seeming power of delusion. We cannot realise to what extent we arc pulled down by such delusion. The mental disease is similar to the coming of a winter storm. When the power of desires gets hold of one, he then is liable to be guilty of fearful karma (wrong action); this in turn produces bodily disease.
"Bodily disease is also brought on by overeating, living in unhealthy places, association with the wicked, impure desires, evil thoughts, etc. These mental or indirect diseases have a direct effect upon the body.
"Now I will explain how both forms of disease perish, O Ram. The wise say that the mental diseases have two divisions, common and specific, the former affect this body only, but the latter tend to rebirth, also. The common diseases may be banished by correct eating and right thinking.