It might not seem intuitive--but Investments in early childhood education are directly linked to the long-term health and success of neighborhoods. That is one idea that connects the work of Dr. David Williams to Purpose Built Communities. Dr. Williams is the Florence Sprague Norman and Laura Smart Norman Professor of Public Health, Chair of the Department of Social and Behavioral Sciences at the Harvard T.H. Chan School of Public Health, and professor of African and African American Studies and Sociology at Harvard University.