Hahnemann, HAH nuh muhn, Samuel (1755-1843), a German physician, founded the homeopathic method of treating disease. He believed that a drug which produces symptoms in a healthy person will cure those symptoms in a sick person (see Homeopathy). Hahnemann published his major work, the Organon der rationellen Heilkunst (Principles of Rational Medicine), in 1810. The book contains his chief ideas: to let like cure like, that medicines become more potent as they are diluted and shaken, and that only one remedy should be given at a time. Hahnemann was born in Meissen, Germany. His full name was Christian Friedrich Samuel Hahnemann. He practiced in many towns in Germany--especially in Leipzig--and later in Paris.