Again, the majority of people are susceptible to infectious diseases and epidemics, yet, if they were really well, they would be immune. Instead, however, of seeking immunity through health, they are seeking it through the use of vaccines and serums, thus adding to the burdens which the body has to bear. All attempts in this direction are bound to end in failure, for, as fast as one disease is suppressed another one will appear. Many people look upon disease and sickness as inevitable, yet the truth is that health is the normal state and ill-health an abnormality. In tracing back ill-health to its source, we find, first of all, that it is due to disobedience of natural law. Large numbers of people break nearly every known natural law of health, and are surprised that they become ill. Yet the wonder is that they are as well as they are. Yet, while obedience to nature's laws and the use of nature-cure methods will carry us a certain part of the way, we find that there must be causes even deeper than those which are physical. We are confronted by the fact that there are many people who obey every known physical law of health, who bathe, exercise, breathe, eat and drink scientifically, who adopt nature-cure methods instead of drugs and serums, who yet cannot find health. Therefore we must search deeper and go to the mind in order to discover the cause of ill-health. When we look to the mind we find a prolific cause of sickness. Man thinks himself into ill-health and disease. It is well known that thinking about disease and sickness produces them in the body. People who are for ever thinking about disease, illness, operations and other morbid subjects, become a prey to these things. Those who believe that sickness is inevitable, manifest it in their life. Morbid thinking produces a morbid state of the body, causing it either to fall an easy prey to infection or to break down into chronic ill-health, or even disease. Allowing the thoughts to dwell upon morbid things is a sure way to sickness and invalidism. Man is not only made ill by his own negative thoughts and emotions, he is also under the hypnotic spell of the race mind. "The God of this world hath blinded the minds of them which believe not." We are all under the spell, more or less, of a huge illusion. The evil, disease, sickness and other imperfections that we see and experience, have no reality, _in reality_, but have an _existence_ in _unreality_. [7] Although they are not real in a real sense, yet they are terribly real to this present limited consciousness. By realizing the truth, and by thinking and living in its light and power, the hypnotic spell becomes broken, not completely, else we should not grow old, but to such an extent that a state of greatly improved health can be enjoyed. [7] For a fuller explanation of this metaphysical statement see Science of Thought Text Books, Nos. I. and II.