Leon Kass: A Life-Changing Teacher Leon Kass, MD, PhD, has had a remarkably distinguished career. Professor emeritus at the University of Chicago, he has written or edited many influential books, served as chairman of the President’s Council on Bioethics, and delivered the prestigious Jefferson Lecture for the National Endowment for the Humanities. For all his accomplish-ments, … Continue reading Leon Kass: A Life-Changing Teacher