Joseph Raz delivered the second Frederic R. and Molly S. Kellogg Biennial Lecture in Jurisprudence on the subject of "Sovereignty & Legitimacy: On the Changing Face of Law, Questions and Speculations."

Speaker Biography: Joseph Raz is a legal, moral and political philosopher and one of the most prominent advocates of legal positivism. He is Thomas M. Macioce Professor of Law at the Columbia Law School, Columbia University.

For captions, transcript, and more information visit http://www.loc.gov/today/cyberlc/feat....