Essayist, editor, columnist, author of many books, and winner of a special Pulitzer Prize citation in 1958 for his powers of news analysis, Walter Lippmann both appraised and influenced twentieth-century American politics. No other author of the century dealt with the persistent problems of politics from so many approaches, was so widely read, or varied so widely in his conclusions. Benjamin F. Wright’s study is the first book devoted to an exposition and analysis of Lippmann’s nine books of political philosophy, as James Reston called them. These books provide a fascinating study of changes in the political and economic ideas of the most important journalist of his time. Lippmann’s books published in 1913 and 1914 reflect the optimism of the Progressive Era, of faith in science and in the ability of people to choose their goals and attain them. In 1922 and 1925, while editor of the New York World, Lippmann wrote searching, often pessimistic analyses of what he believed to be the prevailing assumptions regarding the nature and role of public opinion. Although in the Coolidge era he relegated government to a minor role as mediator, he became an enthusiastic defender of the achievements of the early New Deal. Two years later in a longer look, he found the same New Deal following the path toward totalitarianism. Keynes was discarded and his place taken by the economics of Adam Smith, bolstered by the common law of Coke and the Constitution of the founders. Finally, in 1955, in the extremely popular and very engaging Public Philosophy, there is a lament for the decline of the West and a plea to return to the age of civility and natural law. In a final analytical chapter, Wright presents a critique of Lippmann’s historical understanding and the modern applications of the tradition of natural law. He also assesses Lippmann’s inability to translate the public philosophy into programs or institutional changes and the failure to account for the expansion of governmental functions together with the continued strength of constitutional democracy in the West.