It has never been more important to spread an understanding of how to reason than it is today. Think Again is a clear and readable guide to reasoning and argument, filled with relevant contemporary examples. I hope it will be widely read Peter Singer, author of Practical Ethics
Walter Sinnott-Armstrong is the Chauncey Stillman Professor of Practical Ethics in the Department of Philosophy and the Kenan Institute for Ethics at Duke University. His books include Think Again and Moral Skepticisms.