In "Mountains Beyond Mountains," Tracy Kidder explores the life and work of Dr. Paul Farmer, a physician dedicated to addressing global health issues. Farmer embodies a unique blend of scientific knowledge and a deep understanding of the cultural and mystical aspects of medicine, which he refers to as "magic." His approach combines rigorous medical practices with empathy and a respect for the patients' experiences and beliefs.

Farmer's commitment to healing goes beyond conventional medicine; he seeks to eliminate the deeper social and structural conditions that lead to suffering. This integration of science and "magic" highlights his belief in treating the whole person, not just their ailments, making him a transformative figure in global health activism.