Cassiodorus—famed throughout history as one of the great Christian exegetes of antiquity—spent most of his life as a high-ranking public official under the Ostrogothic King Theoderic and his heirs. He produced the Variae, a unique letter collection that gave witness to the sixth-century Mediterranean, as late antiquity gave way to the early middle ages. The Variae represents thirty years of Cassiodorus’s work in civil, legal, and financial administration, revealing his interactions with emperors and kings, bishops and military commanders, private citizens, and even criminals. Thus, the Variae remains among the most important sources for the history of this pivotal period and is an indispensable resource for understanding political and diplomatic culture, economic and legal structure, intellectual heritage, urban landscapes, religious worldview, and the evolution of social relations at all levels of society during the twilight of the late-Roman state. This is the first full translation of this masterwork into English.

I first became interested in De dialectica in 1966, while I was doing re search on Augustine's knowledge of logic. At the time I made a transla tion of the Maurist text and included it as an appendix to my doctoral dissertation (Yale, 1967). In 1971 I thoroughly revised the translation on the basis of the critical text of Wilhelm Crecelius (1857) and I have re cently revised it again to conform to Professor Jan Pinborg's new edition. The only previously published translation of the whole of De dialectica . is N. H. Barreau's French translation in the Oeuvres completes de Saint Augustin (1873). Thomas Stanley translated parts of Chapters Six and Nine into English as part of the account of Stoic logic in his History of Philosophy (Pt. VIII, 1656). I offer De dialectica in English in the hope that it will be of some interest to historians of logic and of the liberal arts tradition and to students of the thought of Augustine. In translating I have for the most part been as literal as is consistent with English usage. Although inclusion of the Latin text might have justified a freer translation, for example, the use of modern technical terms, it seemed better to stay close to the Latin. One of the . values in studying a work such as De dialectica is to see familiar topics discussed in a terminology not so familiar. In the translation I follow these conventions.