professor bruce caldwell, mr. george soros and professor richard epstein. our first speaker is recent caldwell, currently professor of economics at duke university and direct her at the center for the history of political economy. he said editor of hayek's works of which this edition of "after words" is the volume published. caldwell himself is edited for hayek's most important works in5 the series among the new additions, he's also the author of an important study of hayek's thought, hayek's challenge an intellectual biography. all of us who appreciate hayek's contributions of the economic and social that to professor caldwell for having undertaken the editorship of the collective works. >> thank you for the very kind introduction. i'm going to talk a little today about how hayek came to write but i want to first recognize ronald of the editor of this magnificent volume. i felt that the collected works was very fortunate to be able to get someone who is on the scene with hayek published the book and indeed ronald didn't review editor of the new individuali