This work explores the early diplomatic career of Robert Morier, the British Foreign Office's foremost expert on German affairs in the period leading up to German unification in 1871. As the subject of an intellectual biography, Morier provides valuable insights into the effects of German events and ideas upon the changing character of mid-Victorian liberalism. Morier is an important figure in understanding the dynamics of Anglo-German relations during this period, not only because of his unrivalled knowledge of German affairs, but also because of his broad connections to prominent liberal politicians and intellectuals in both countries. Through Morier's career, Murray examines the general currents of political, economic, and cultural change. Murray addresses four main components of liberal thought under debate during the mid-Victorian period: constitutionalism and self-government; the problem of nationalism; free trade and commercial treaties; and church-state relations in the aftermath of the first Vatican Council. Robert Morier was forced to confront each of these themes as they found concrete expression in German events, engaging leading liberal intellectuals and politicians in discussions over the future of both Germany and Britain. Thus, Germany became an important source of debate among British liberals regarding several fundamental aspects of their ideology, the most prominent being the proper role of the state in a modern liberal society.