‘Sum of Us’ author Heather McGhee shares stories of racial equality, inequality — as well as ideas, vision for America’s future by Max Zambrano on July 15, 2021 share MAX ZAMBRANO - STAFF WRITER New York Times best-selling author of The Sum of Us: What Racism Costs Everyone and How We Can Prosper Heather McGhee delivers her Interfaith Lecture Tuesday in the Amphitheater. KRISTEN