Science, while demonstrating the great facts it is to-day demonstrating in connection with the mind in its relations to and effects upon the body, is also finding from its very laboratory experiments that each particular kind of thought and emotion has its own peculiar qualities, and hence its own peculiar effects or influences; and these it is classifying with scientific accuracy. A very general classification in just a word would be--those of a higher and those of a lower nature. Some of the chief ones among those of the lower nature are anger, hatred, jealousy, malice, rage. Their effect, especially when violent, is to emit a poisonous substance into the system, or rather, to set up a corroding influence which transforms the healthy and life-giving secretions of the body into the poisonous and the destructive. When one, for example, is dominated, even if for but a moment by a passion of anger or rage, there is set up in the system what might be justly termed a bodily thunder-storm, which has the effect of souring or corroding the normal and healthy secretions of the body and making them so that instead of life-giving they become poisonous. This, if indulged in to any extent, sooner or later induces the form of disease that this particular state of mind and emotion or passion gives birth to; and it in turn becomes chronic. We shall ultimately find, as we are beginning to so rapidly to-day, that practically all disease has its origin in perverted mental states or emotions; that anger, hatred, fear, worry, jealousy, lust, as well as all milder forms of perverted mental states and emotions, has each its own peculiar poisoning effects and induces each its own peculiar form of disease, for all life is from within out. Then some of the chief ones belonging to the other class--mental states and emotions of the higher nature--are love, sympathy, benevolence, kindliness, and good cheer. These are the natural and the normal; and their effect, when habitually entertained, is to stimulate a vital, healthy, bounding, purifying, and life-giving action, the exact opposite of the others; and these very forces, set into a bounding activity, will in time counteract and heal the disease-giving effects of their opposites. Their effects upon the countenance and features in inducing the highest beauty that can dwell there are also marked and all-powerful. So much, then, in regard to the effects of one's thought forces upon the self. A word more in regard to their effects upon others.