Don Sergio Castro is a modern-day hero who follows his own path. For more than 45 years, he has worked the land with the indigenous people of Chiapas, built schools and treated burn and wound victims at no cost. This is his story.

A modern-day hero, Sergio Castro has worked to satisfy basic human needs of the poor in Chiapas, Mexico for more than four decades. But Don Sergio operates on the edge of an economic precipice. Can he continue to serve the people who depend on his good works?—Anonymous