Of The Manichaeans is a historical and philosophical work written by Alexander, a Christian bishop in the 5th century AD. The book is focused on the Manichaean religion, a dualistic belief system that originated in Persia and spread throughout the Roman Empire in the 3rd and 4th centuries AD.Alexander provides a detailed account of the Manichaean beliefs, practices, and organization, drawing on his own interactions with Manichaean missionaries and...