Speeches & Publications
Address Delivered at Columbia University
October 21.2009
New York City
500th Convocation Address
October 9.2009
University of Chicago
American Association for the Advancement of Science Remarks
February 12.2009
Chicago
Address to the American Academy of Arts and Sciences
October 6.2007
Cambridge, Massachusetts
Inaugural Convocation Address
October 27.2006
University of Chicago
Civic Dinner Address
September 14.2006
Chicago
