Most of the cases of physical and mental illness come from exhaustion of the nerves. Not everybody knows to what extent to use nerve force in everyday life and to what extent to control it. Very often a good person, a kind, loving, affectionate person, gives out his energy at every call from every side, and so, continually giving energy, in the end finds his nerves troubled and weakened. In the end the same person who was once kind and nice and polite cannot keep this up, because when the funds of energy have expired, then there is no control, there is no power of endurance, there is no patience to take things easily. Then the person who once proved to be good and kind becomes irritable and troubled, and tired and disgusted with things.

Very often it may be called abuse of goodness; for it is not always giving out that answers the demands of everyday life; it is the balanced condition of one's body and mind which answers the demands of life satisfactorily. And sometimes it becomes a passion with a person to waste his energy either in doing something or in speaking continually; and this passion can grow to such an extent that even when that person has lost a great deal of his energy, he will still find satisfaction in giving out even more. In the presence of that person others will feel depleted, because he has no energy left, he is trying to give out what little he has, and the irritation and strain fall upon the others; it makes them nervous also.

Weakness of nerves is not only the cause of physical diseases, but it leads to insanity. There is one principal cause of physical diseases as well as of mental diseases: overstrained nerves, exhausted nerves; and that person whose nerves are exhausted, in spite of all virtue and goodness, goodwill and desire to do right, will prove to be doing wrong, to his own surprise, because he has lost self-discipline. His high ideals are of no use to him, for he has not got himself in hand. His qualifications, his knowledge, his attitude, his morals will all prove to be futile in the absence of that nervous force which keeps man fit and capable of doing all that it is proper for him to do in the world.

Lack of soberness also causes nervous exhaustion. Therefore all alcoholic and intoxicating things consume the energy of the nerves, eat the energy of the nerves. One might ask why a person takes delight in such things, and again the answer is that it is a passion; that anything that produces intoxication for the moment, that excites the nerves, makes one feel, so to speak, more cheerful for that moment. But one depends upon something outside, and the reaction comes when the effect of that intoxicant has worn off. Then one feels twice as weak and exhausted as before, and needs twice the amount of drug or alcohol in order to make one feel, for a few hours, as cheerful as one did. And so one goes on and on until one has no power over mind and body but becomes a slave to something one takes. That is the only time that such a person thinks he lives; at all other times he feels miserable. That becomes his world, his heaven, his paradise, his life. All manner of excess in passion and anger, all manner of sensual life and rejoicing in it robs one of the energy, the power and vitality of the nerves.

Besides, every effect that is created in voice, in word, in singing, is created by the nervous power; the whole secret of magnetism is in the nerves. The whole secret of success of a public man, a public person on the stage or in the concert-hall is his nervous power, the success of the lawyer, of the barrister in the court is his nervous power. It will always be found that a good barrister who has made a name has that power, and it is magnetism. Therefore the sign of a person with health, both physical and mental, is that he develops that influence which is expressed by nervous power, and it has its influence upon all things.

Strength gives one more-power, weakness causes a greater weakness. The proper condition of the nerves enables one to impress. A person nervously depleted, even if he be in the right, cannot impress it upon another, because there is no strength behind it. And so even if he is in the right, he will be at a loss what to do. There is no power to go forward, to stand up for his own right.

The system that we know today of keeping patients shut up in hospitals, in asylums, is just like making them captives to the disease. The atmosphere of the place and the very thought of being in the hospital make them feel ill; and so it is with the life in asylums. However efficient the treatment may be, it gives a person the impression that he is out of his mind, there is something wrong with his mind; and the whole atmosphere suggests the same thing. Besides, it would be kinder on the part of society and of the family, if the patients could be taken in hand by friends or relations in their difficult times. They could be helped better than by putting them in places where they can think of nothing but their illness. I have myself seen many cases whom relations or friends have looked after, and they have been helped much more than by what they would have received in a hospital.

One might say that medical treatments require a special place for such things, and that there they have everything besides the physician to look after them, and that that is the only way in large cities that such cases can be looked after. Yes, it is true, and one cannot help it where the situation is difficult; still, where it can be helped one should try to help.

Nervous diseases are very often treated by giving medicines. There is no medicine in the world which can do good to nerves; for nerves are the most natural part of one's being. They are the part of one's being which is linked with the physical world and with the mental world. It is the central part of one's being and there is no better remedy for nerves than nature, a life of rest and repose, quiet, proper breathing, proper nourishment, and someone to treat the patient with wisdom. By understanding the law of environment and climatic influences, by understanding what influences people have upon such a patient, one can cure him.

Nervous energy is a kind of battery for the whole mechanism of the mind and body. For the mechanism of mind, therefore, it is the clearness of the nervous mechanism and the good working of the nervous mechanism which enable us to make our thought clear to ourselves, or to hold our thought, or to imagine, or to think, or to memorize; and when the nervous system is not clear, then one cannot keep things in mind, conceive things in the mind, or keep to one thought, and various conditions of mental disorder begin to show. Within the body the nervous system is called centers by Yogis. The different centers are the points of the nervous system, the centers through which one experiences intuition, one feels, one observes keenly.

And now the question is where to get nervous energy, and how to get it. Our body and mind are a battery of that power, they are made of it, we are that power. The magnetism of a human being is much greater than anything else in the world. No jewel, no gem, no flower, no fruit, nothing in the world has such magic as a human being has if he knows how to retain it, how to keep himself in that condition. Because with all the scientific discoveries of radium and electrons and all the different atoms, there is no atom in the world which is more radiant than the atoms with which the human body is composed, atoms which are not only attractive to the human eye, but attract the whole of creation towards the human being.

The horse serves man, the camel carries his load, the tiger surrenders to man, the elephants walk by his command. But when he loses his proper spirit, then it is just like losing salt.

As it is said in the Bible, "Ye are the salt of the earth, and when the salt hath lost its savor, wherewith shall it be salted?"

When man's own body, his own spirit, are more radiant than anything else, then there is nothing else that can give him more spirit. He himself is the spirit.