In this comprehensive, revelatory biography --- 15 years of interviews and research in the making --- historian Jane Sherron De Hart explores the central experiences that crucially shaped Ruth Bader Ginsburg’s passion for justice, her advocacy for gender equality, and her meticulous jurisprudence. At the heart of her story and abiding beliefs is her Jewish background, specifically the concept of tikkun olam, the Hebrew injunction to “repair the world,” with its profound meaning for a young girl who grew up during the Holocaust and World War II.