Part of the Complete Works series, On Benefits, written between 56 and 64 CE, is a treatise addressed to Seneca's close friend Aebutius Liberalis. The longest of Seneca's works dealing with a single subject - how to give and receive benefits and how to express gratitude appropriately - On Benefits is the only complete work on what we w call gift exchange to survive from antiquity. Benefits were of great personal significance to Seneca, who remarked in one of his later letters that philosophy teaches, above all else, to owe and repay benefits well.
Miriam Griffin is emeritus fellow in ancient history at Somerville College. University of Oxford. She is the author of Seneca: A Philosopher in Politics, among other books. Brad Inwood is professor in the Departments of Classics and Philosophy and Canada Research Chair in Ancient Philosophy at the University of Toronto. He is the author of Reading Seneca: Stoic Philosophy at Rome, among other books.