In his recent JAMA article, Donald Berwick eloquently describes what he termed the “moral determinants of health,” by which he meant a strong sense of social solidarity in which people in the United States would “depend on each other for securing the basic circumstances of healthy lives,” reflecting a “moral law within.” Berwick’s work should serve as a call to action for bioethicists and clinical ethicists to consider what they can do to be forces of broad moral change in their institutions.