I don't have much to add to the other reviews of this excellent, well-written book. Although Robert Nozick's landmark book Anarchy, State, and Utopia entered the canon of political philosophy soon after it was published in the mid-1970s, it is a remarkably disorganized and difficult book. Here, English philosopher Jonathan Wolff carefully and lucidly reconstructs ASU's main arguments. Along the way he points out numerous problems and holes in ASU -- raising huge difficulties for its libertarian approach to politics -- but he is scrupulously fair and acknowledges that Nozick has changed the face of political theory. I read this book immediately after I struggled through ASU and I can't exaggerate how it deepened my understanding of Nozick's book. And it's short!