In 1943, the renowned theologian Reinhold Niebuhr wrote a prayer for a church service in a New England village. Its appeal for grace, courage, and wisdom soon became famous the world over. Here, Elisabeth Sifton, Niebuhr's daughter, reclaims the true history of the Serenity Prayer and, in a poignant narrative, tells of efforts made by the brave men and women who, like Niebuhr, devoted their lives to the causes of social justice, racial equality, and religious freedom in a world spiraling into and out of economic depression and war. Recalling her father's efforts to warn the clergy of the dangers of fascism, and of America's own social and spiritual crises, Sifton reminds us of what is possible when liberal, open-minded leaders—not zealous fundamentalists or hawkish plutocrats—shape the conscience of the nation. The Serenity Prayer is itself a meditation on the power of prayer in morally compromised, unstable times.