Literary biographer, critic, fiction writer, moralist, and poet, Samuel Johnson was one of the two or three most important figures in eighteenth-century British literary history. His most notable poem, The Vanity of Human Wishes (1749), makes its content clear in its title. His fable Rasselas, first published under the title The Prince of Abissinia (1759), narrates the story of the residents of a fictional Happy Valley, who enjoy gratification of all wants, but nevertheless find themselves discontented because they have nothing to long or hope for and so no outlet to exercise imagination.