Arrian
Arrian of Nicomedia (/ˈæriən/; Latin: Lucius Flavius Arrianus; Greek Ἀρριανός c. AD c. 86 – c. 160) was a Greek historian, public servant, military commander and philosopher of the Roman period. The Anabasis of Alexander is perhaps his best-known work, and is generally considered one of the best sources on the campaigns of Alexander the Great. Its title and style are designed to evoke the Anabasis by Xenophon, for which reason Arrian became known by the surname Xenophon after the older author. Arrian's other works include Discourses of Epictetus and Indica. As other authors of the Second Sophistic, Arrian wrote primarily in Attic (his philosophical works in Koine Greek, but Indica is in Herodotus' Ionic dialect).