Peri Alypias

Peri Alypias (Ancient Greek: Περὶ Ἀλυπίας, lit.'On Consolation from Grief'), also known as De indolentia, is a treatise composed by Galen after a massive fire in the centre of Rome in 192 AD. Galen's original Greek text was considered lost until it was discovered in 2005 in the library of the Vlatadon Monastery in Thessaloniki by then-PhD student Antoine Pietrobelli.

Prior to its rediscovery, Galen's Peri Alypias was only known from fragmentary references and quotes in Arabic and Hebrew, and the title was mentioned in Galen's On My Own Books (De Libris Propiis).