Aquinas, says Jean Porter, gets justice right. In this book she shows that Aquinas offers us a cogent and illuminating account of justice as a "personal" virtue rather than a virtue of social institutions, as John Rawls and his interlocutors have described it and as most people think of it today. Porter presents a thoughtful interpretation of Aquinas s account of the complex virtue of justice as set forth in the "Summa theologiae, " focusing on his key claim that justice is a perfection of the will. Building on her interpretation of Aquinas on justice, Porter also develops a constructive expansion of his work, illuminating major aspects of Aquinas s views and resolving tensions in his thought so as to draw out contemporary implications of his account of justice that he could not have anticipated. "