This book enters a crowded field. There are many books on Catholic social thought (CST), as suggested by this book’s select bibliography of over 200 items. Most religious studies publishers—especially those of a Catholic orientation—have one or more books on the topic. There are roughly thirty to forty texts in print that a college professor would consider when teaching a course or a module on Catholic social thought. Nonetheless, J. Milburn Thompson’s Introducing Catholic Social Thought is a welcome addition to the field. Thompson has written a clear, informative, and fairly engaging book for college students and others wanting to know what CST is and why it matters.