Libanius (Libanios; 314–392 or 393) was a teacher of rhetoric of the Sophist school in the Eastern Roman Empire. His prolific writings make him one of the best documented teachers of higher education in the ancient world and a critical source of history of the Greek East during the 4th century AD. During the rise of Christian hegemony in the later Roman Empire, he remained unconverted and in religious matters was a pagan Hellene. Libanius was born in Antioch, located near the modern-day city of Antakya, Turkey. He was born into a deeply cultured and once-influential family that had experienced substantial recent decline. In 303 AD, eleven years before his birth, his family had participated in resisting an insurrection by a local army garrison. In the end, Roman Imperial authorities were equally concerned by local aristocrats arming themselves as they were by the rebellious troops. Libanius' family fell out of favor and his grandfather was executed. Libanius' father died when he was eleven, leaving his upbringing to his mother and maternal uncles, who were in the process of rebuilding his family's reputation. At fourteen years old he began his study of rhetoric, for which he withdrew from public life and devoted himself to philosophy. Unfamiliar with Latin literature, he deplored its influence. He studied in Athens under Diophantus the Arab and began his career in Constantinople as a private tutor. He was exiled to Nicomedia in 346 (or earlier) for around five years but returned to Constantinople and taught there until 354. Before his exile, Libanius was a friend of the emperor Julian, with whom some correspondence survives, and in whose memory he wrote a series of orations; they were composed between 362 and 365. In 354 he accepted the chair of rhetoric in Antioch, his birthplace, where he stayed until his death. His pupils included both pagans and Christians. Libanius used his arts of rhetoric to advance various private and political causes.