Book excerpt: On the five-hundredth anniversary of the 1519 debate between Martin Luther and John Eck at Leipzig, Luther at Leipzig offers an extensive treatment of this pivotal Reformation event in its historical and theological context. The Leipzig Debate not only revealed growing differences between Luther and his opponents, but also resulted in further splintering among the Reformation parties, which continues to the present day. The essays in this volume provide an essential background to the complex theological, political, ecclesiastical, and intellectual issues precipitating the debate. They also sketch out the relevance of the Leipzig Debate for the course of the Reformation, the interpretation and development of Luther, and the ongoing divisions between Protestantism and Roman Catholicism.