A vocal abolitionist before and during the Civil War, Ralph Waldo Emerson (1803-1882) was scorned by the South and embraced by the North as one of the nation's most prominent antislavery activists. After his death, however, the image of Emerson as a political thinker and activist faded from public memory, and he was remembered as a remote literary figure known for his writing on transcendentalism. An authoritative guide to the political thought of...