'In this important new book, Jed Stiglitz develops a novel new theory about the foundations of the administrative state. He turns our attention from the classic view that broad delegation to agencies is warranted because agencies are experts toward a focus on agencies' responsibility for 'credible reasoning' in administrative decision-making. The Reasoning State will fuel vital debates about the constitutional status of agencies and contemporary administrative law.' Daniel B. Rodriguez, Harold Washington Professor, Northwestern University Pritzker School of Law