Reinhold Niebuhr

Born in Wright City, Missouri, in 1892, Reinhold Niebuhr became one of the most influential Protestant thinkers in the United States. He served as a pastor in Detroit before joining Union Theological Seminary in New York, where he taught for more than three decades and reached a wide audience as a writer, lecturer, and commentator on public life.

Niebuhr is best known for developing what came to be called Christian realism—a way of thinking that took both moral ideals and the stubborn realities of human selfishness seriously. Among his most important books are Moral Man and Immoral Society and The Nature and Destiny of Man, works that explored the tension between personal ethics, group behavior, and political power.

He was also a major public voice in 20th-century America, writing about war, democracy, justice, and responsibility in times of crisis. Even readers who have never opened his books may know him through the widely quoted Serenity Prayer, which is often linked to his name.