From foundational concepts to policy issues to critiques, Zwolinski and Ferguson have put together arguably *the* definitive reference on libertarianism. Whether you’re sympathetic or not at all, very familiar with libertarianism or not at all, you’ll find something of value in this book. For me personally, I was surprised to find some of the most interesting chapters to be the ones that at first glance seemed the most simple or dull. For example, the chapters on Property Rights and Taxes by van der Vossen and Fleischer respectively. The most original (and important) contribution in my opinion is Jason Lee Byas’ impressive chapter exploring libertarian thought on Rectification for Historical Injustices. Pick this book up if you get the chance.