Farmer firmly believes that access to quality healthcare is not a privilege, but a fundamental human right. He challenges the notion that poverty and disease are inevitable, arguing that with sufficient resources and political will, even the most neglected diseases can be treated and prevented. This conviction drives him to establish clinics and train healthcare workers in impoverished communities worldwide, fighting tirelessly for his patients' well-being.

The book highlights how poverty, inequality, and political instability directly contribute to the spread of disease. Farmer doesn't just treat individual patients, he tackles the root causes of health disparities. He advocates for structural change, challenging readers to consider the social determinants of health and the need for a more just and equitable world.

While acknowledging the systemic nature of global health challenges, Kidder emphasizes the profound impact one determined individual can have. Farmer's unwavering commitment to his patients, his innovative approaches to healthcare delivery, and his ability to inspire others demonstrate that individuals possess the power to effect real change, no matter how daunting the task.