“Lectures on Homeopathic MATERIA MEDICA” is one of the main books of J. T. Kent. Along with the “Repertory” and “Lectures on the Philosophy of Homeopathy”, it is included in the “golden” fund of homeopathic literature. Individual portraits of 207 drugs are presented in an accessible, vivid form. The author’s rich imagination prompted him to present the drugs in the form of individual portraits, bright pictures that help the doctor find a way out in the endless labyrinth of disparate symptoms. About Sulfur: “People who lead a sedentary lifestyle, who do not leave their room, who devote all their time to reading, meditation, philosophical pursuits, and who do not do any physical work, soon come to the conclusion that they must eat only the simplest food; this food is not enough to nourish the body, and as a result, philosophical delirium develops.” Kent in his book highlights the essence of the action of the medicine, shows the drugs in their interrelation. A doctor who studies Materia Medica according to Kent will be able to see in the description of the pathogenesis of drugs the order and outline of the sequential chain of development of pathological processes, and therefore clear instructions for the use of drugs in the treatment of their patients.