Susceptibility is one of the fundamental attributes of life.
Upon it depends all functioning, all vital processes, physiological and pathological. Digestion, assimilation, nutrition, repair, secretion, excretion, metabolism and catabolism, as well as all disease processes arising from infection or contagion depend upon We power of the organism to react to specific stimuli. The cure and alleviation of diseases depend upon the same power of the organism to react to the impression of the curative remedy. When a hom opathically selected medicine is administered to a sick person, the disappearance of the symptoms and restoration of the patient to health represents the reaction of the susceptible organism to the impression of he curative remedy. As a piece of machinery in which the bearings have become dry or rusty from disuse, creaks and groans when it is again started up into action, so the diseased, congested, sluggish organs of the body sometimes squeak and groan when they begin to respond to the action of the curative remedy.