'Required reading for all of humanity' Oprah Winfrey'An instant American classic and almost certainly the keynote nonfiction book of the American century thus far.' Dwight Garner, The New York Times'The hierarchy of caste is not about feelings or morality. It is about power - which groups have it and which do not'Beyond race or class, our lives are defined by a powerful, unspoken system of divisions. In Caste, Pulitzer Prize-winning author Isabel Wilkerson gives an astounding portrait of this h ...