for those of you who don't know me i'm neil guterman, the dean of the school of social service administration here at the university of chicago and i want to thank you for joining us for this evenings event. american universities have long been unique institutions that generate novel sometimes controversial and even classic ideas that will challenge and sometimes press popular wisdom bringing to bear deeper more rigorous analyses of evidence. such ideas can at times you'll advances or even breakthroughs of the most vexing questions and problems of our day. one of the most indispensable pillars in higher education, which makes such advanced wholly possible, is a cardinal principle and practice of academic freedom, the protection and the unfettered pursuit of ideas, concepts, evidence and knowledge, and the passing on of such in our education students. while the principle of academic freedom is a central freedom of american education, the university of chicago has a rather distinctive and deeply held approach to academic freedom, a which i'm sure you'll be hearing more about this evening from s