That Thoughts may poison, is a well-proven fact. Depressing thoughts interfere with the cerebral circulation, impairing the nutrition of the cells and nerve centers. The result is that the organs and tissues manifest lost or impaired function--loss of general nutrition follows--and a break-down is inevitable. Fear, worry, anger, envy, jealousy, and other negative thoughts, reflect themselves most disastrously in the human system. Fear has paralyzed nerve centers, and turned the hair white over night. A mother's milk has been poisoned by a fit of anger. Fear and Hate--father and son--have produced insanity, idiocy, paralysis, cholerina, jaundice, sudden decay of teeth, fatal anaemia, skin diseases, erysipelas, and eczema. Epidemics owe their rapid spread and heavy death rate to Fear and Ignorance. Epidemics may kill their dozens--Fear kills its thousands. All the brood of negative, fearful, selfish, hateful thoughts manifest themselves in physical conditions. Stigmata or marks upon the body, caused by fear or desire, are quite common in the annals of medical science and psychology. Professor Gates, of the Smithsonian Institution, Washington, D.C., in his investigation of the effect of mental states upon the body, found that irascible, malevolent and depressing emotions generated in the system injurious compounds, some of which were extremely poisonous; he also found that agreeable, happy emotions, generated chemical compounds of nutritious value, which stimulated the cells to manufacture energy. He says: "Bad and unpleasant feelings create harmful chemical products in the body which are physically injurious. Good, pleasant, benevolent feelings create beneficial chemical products which are physically healthful. These products _may be detected by chemical analysis_ in the perspiration and secretions of the individual. More than forty of the good, and as many of the bad, have been detected. Suppose half a dozen men in a room. One feels depressed, another remorseful, another ill-tempered, another jealous, another cheerful, another benevolent. Samples of their perspiration are placed in the hands of the psycho-physicist. Under his examination they reveal all these emotional conditions distinctly and unmistakably." Remember, this is not "the airy fancy of some enthusiastic Mental Scientist," but is the testimony of a leading scientific investigator in the laboratories of the Smithsonian Institution, one of the best known scientific institutions of the world. "Chemical analysis," mind you--not "transcendental imaginings."