JÓZEF NIZNIK is Professor at the Institute of Philosophy and Sociology at the Polish Academy of Sciences. His research has been focused on the borderline between philosophy and sociology, especially such areas as the sociology of knowledge and the philosophy of the social sciences. He is author of four books in Polish.JOHN T. SANDERS is Professor of Philosophy at the Rochester Institute of Technology. He is author of The Ethical Argument Against Government, Contra Leviathan: On the Legitimacy and Propriety of the State, and coeditor of For and Against the State: New Philosophical Readings.