In this volume, classics scholar Henry John Roby provides a helpful guide to the classic work of jurisprudence, Justinian’s Digest. Justinian the Great was the Byzantine emperor from 527 to 565. He is well-known for his judicial reforms and revision of Roman law. Part of Justinian’s legislation is contained in his Digest. Roby offers a substantive introduction to the Digest and presents insightful essays on this important, but difficult, text.