It is dangerous to be depressed for too great a length of time, depression being tantamount to illness in the ability to think. The depressed person has lost the ability to see existence from its normal perspective. He can see it only in a black mental light. He wanders unremittingly in the shadow regions of the world of thought. It is as if he cannot find the way out of these shadow regions into the sunshine areas of the world of thought. He sees nothing but hopelessness all around him. He finds everything so insurmountable that he feels very sorry for himself and has an exaggerated sense of self-pity. He feels he is a martyr. He feels that he is a victim of the whims of Nature, if there is no one he can blame for his "martyrdom". It is obvious that this situation, if it is not brought to an end, can lead to nothing but depression. But depression is in turn the first beginnings of a mental illness that can, in the worst cases, end in suicide. More abnormal than this a human being cannot become.
      As I have mentioned above, unnatural fatigue, if it is not cured, can lead to a temporary physical or mental breakdown. It is of no use turning a blind eye to it and letting things slide, such as thousands of people do today, thus filling mental homes and psychiatric hospitals with these human wrecks, that is those who do not end up committing suicide.