Go to the doctor and they won’t begin to treat you without taking your history — and not just yours, but that of your parents and grandparents before you. Pulitzer Prize-winning journalist Isabel Wilkerson points this out as she reflects on her epic work of narrative nonfiction, The Warmth of Other Suns. She’s immersed herself in the stories of the Great Migration, the movement of six million African Americans to northern U.S. cities in the 20th century. The book is a carrier of histories and truths that help make sense of human and social challenges at the heart of our life together now.