On the march to greatness. Arrian (Flavius Arrianus), of the period ca. AD 95–175, was a Greek historian and philosopher of Nicomedia in Bithynia. Both a Roman and an Athenian citizen, he was governor of the Roman province of Cappadocia 132–137, and repelled an invasion of the Alani in 134. He retired then to Athens (where he was archon in 148–149) and later...