This chapter presents an interview with Richard Posner, a judge of the US Court of Appeals for the Seventh Circuit. He was formerly the Lee and Brena Freeman Professor of Law, and is currently a Senior Lecturer at the University of Chicago. Judge Posner is best known for his leadership and pioneering work in the law and economics field in the 1970s and 1980s. He was a founding editor of the Journal of Legal Studies and (with Orley Ashenfelter) the American Law and Economics Review. Topics covered during the interview include why he chose to become a legal academic; the intellectual climate while he was at Harvard Law School; his description of the major tenets of law and economics; his discourse with rights theorists, particularly Ronald Dworkin, as well as critical legal studies types, specifically Duncan Kennedy; and his engagement with the law and economics types today.