Since Pope Leo XIII's encyclical "On the Condition of Workers" (Rerum Novarum), the Catholic church has produced a significant volume of teachings on the major social issues of our time. This book is an attempt to synthesize the main outlines of that teaching in a compact, accessible form. Using the question and answer format, each question is answered with a direct quote from an official document of the church. The areas covered are social justice, economic justice, political justice, environmental justice, discrimination, war and peace, and capital punishment. The book is suitable for adult education, college courses, and as a handy reference work for anyone involved in the pursuit of justice and peace.