“Any severe anger or grief is almost certain to be succeeded by fever in certain parts of Africa,” says Sir Samuel Baker, in the British and Foreign Medico Chirurgical Review. “In many cases, I have seen reasons for believing that cancer had its origin in prolonged anxiety,” says Sir George Paget, in his “Lectures.” “The vast majority of the cases of cancer, especially of breast or uterine cancer, are probably due to mental anxiety,” says Dr. Snow, in the London _Lancet_. “Diabetes from a sudden mental shock is a true, pure type of physical malady of mental origin,” says Sir B. W. Richardson in “Discourses.” “I have been surprised how often patients with primary cancer of the liver lay the cause of this ill health to protracted grief or anxiety. The cases have been far too numerous to be accounted for as mere coincidences,” says Murchison. “Eruptions on the skin will follow excessive mental strain. In all these and in cancer, epilepsy and mania from mental causes there is a predisposition. It is remarkable how little the question of physical disease from mental influence has been studied,” says Sir B. W. Richardson. “My experiments show that irascible, malevolent and depressing emotions generate in the system injurious compounds, some of which are extremely poisonous; also that agreeable, happy emotions generate chemical compounds of nutritious value, which stimulate the cells to manufacture energy,” says Elmer Gates, the celebrated American scientist. Gates’ experiments show with minute exactitude just how it is that one’s impalpable thoughts and emotions affect the battle of the blood, and his work makes it easier for one to understand and appreciate the portion of truth underlying such manifestations as the New Thought and Christian Science movement. There can be no doubt that men and women have practically remolded their bodies and changed the whole course of their lives by using the impalpable yet potent force of their wills. Sometimes these have been men and women seemingly without a vestige of will; and yet, by comprehending the necessity for will, they took the first steps towards attaining possession of it. Many very remarkable stories could be told illustrating this point. Professor William James, of Harvard, introduced one of the writers to a man who had been afflicted with what had seemed a helpless case of mental trouble, accompanied by physical ailments which were rapidly breaking him down; and this man had affected a complete cure through his own unaided efforts. He resolved that he could be cured, and cured he was.