Andreas A.M. Kinneging studies political science at the Catholic University of Nijmegen. In 1990 he was appointed professor of political science at the University of Leiden. Currently he is director of research in the history of political theory in state agencies. He is the author of various works (in Dutch), including Liberalism in Political Economy , Philosophical Foundations of Liberalism , The Philosophy of Classical Liberalism , and briefer writings in the periodical literature.