When Michael Walzer’s Spheres of Justice was published ten years ago, the front page of The New York Times Book Review hailed the work as “an imaginative alternative to the current debate over distributive justice.” Now in Thick and Thin, Walzer revises and extends his arguments in Spheres of Justice, framing his ideas about justice, social criticism, and national identity in light of the new political world that has arisen in the past decade. Walzer focuses on two different but interrelated kinds of moral argument: maximalist and minimalist, thick and thin, local and universal.