Alan Blinder, director of Princeton University's The Center for Economic Policy Studies, joins Federal Reserve Board Chairman Ben Bernanke for a question and answer session after Bernanke gave a lecture in Alexander Hall's Richardson Auditorium at Princeton University on Friday, September 24, 2010. Bernanke, who taught at Princeton for two decades before entering public service in 2005, was invited to speak by two University centers, the Bendheim Center for Finance and the Center for Economic Policy Studies. Bernanke was the founding director of the Bendheim Center for Finance, which is celebrating its 10th anniversary this fall. Martin Griff / The Times of Trenton