A definitive collection of writings by the theologian and public intellectual who was the conscience of the American Century “One of my favorite philosophers,” remarked Barack Obama about the theologian Reinhold Niebuhr (1892–1971) in 2007. President Obama is but one of the many American political leaders—including Jimmy Carter and Martin Luther King Jr.—to be influenced by Niebuhr’s writings. Throughout the Depression, World War II, and the Cold War, Niebuhr was one of the most prominent public voices of his time, probing with singular style the question of how to act morally in a fallen world. This Library of America volume, prepared by Niebuhr’s daughter, is a collection of four indispensable books—Leaves from the Notebook of a Tamed Cynic (1929), Moral Man and Immoral Society (1932), The Children of Light and the Children of Darkness (1944), and The Irony of American History (1952)—and other essays, sermons, and lectures. Notable entries include Niebuhr's world-famous Serenity Prayer, plus his writings on Prohibition, the Allied bombing of Germany, apartheid in South Africa, and the Vietnam War—many of which are collected here for the first time. LIBRARY OF AMERICA is an independent nonprofit cultural organization founded in 1979 to preserve our nation’s literary heritage by publishing, and keeping permanently in print, America’s best and most significant writing. The Library of America series includes more than 300 volumes to date, authoritative editions that average 1,000 pages in length, feature cloth covers, sewn bindings, and ribbon markers, and are printed on premium acid-free paper that will last for centuries.