Oprah Winfrey and Isabel Wilkerson discuss the eight pillars of caste that Pulitzer Prize-winning author Wilkerson describes in her book, Caste: The Origin of our Discontent. In nine half-hour podcasts featured in Oprah’s Book Club, they unpack the meaning of: 1. Divine Will and the Laws of Nature, 2. Heritability, 3. Endogamy and the Control of Marriage and Mating, 4. Purity Versus Pollution, 5. Occupational Hierarchy, 6. Dehumanization and Stigma, 7. Terror as Enforcement, Cruelty as a Means of Control, and 8. Inherent Superiority Versus Inherent Inferiority. (September 2020)