Libanius of Antioch (AD 314-393) stands out as a fundamental source for the history of the Greek East in the 4th century AD. Nearly half the important figures in the Eastern empire of his day are known in part or in full through his works alone. Some 700 people, including many of the key players of the age, are known through his vast collection of letters, the largest to survive from antiquity. Drawn from the 1269 letters written between 355 and 365, the 183 translated letters in this volume offer are addressed to a wide range of people, from family members to old schoolmates and pupils, from provincial governors to the most important officials of the imperial court.