For nearly thirty years, anthropologist and physician Paul Farmer has traveled to some of the most impoverished places on earth to bring comfort and the best possible medical care to the poorest of the poor. Driven by his stated intent to "make human rights substantial," Farmer has treated patients-and worked to address the root causes of their disease-in Haiti, Boston, Peru, Rwanda, and elsewhere in the developing world. In 1987, with several colleagues, he founded Partners In Health to provide a preferential option for the poor in health care. Throughout his career, Farmer has written eloque.