The Deipnosophistae is an early 3rd-century AD Greek work (Δειπνοσοφισταί, Deipnosophistaí, lit. "The Dinner Sophists/Philosophers/Experts") by the Greek author Athenaeus of Naucratis. It is a long work of literary, historical, and antiquarian references set in Rome at a series of banquets held by the protagonist Publius Livius Larensis for an assembly of grammarians, lexicographers, jurists, musicians, and hangers-on.
The Greek title Deipnosophistaí (Δειπνοσοφισταί) derives from the combination of (δειπνο-, "dinner") and sophistḗs (, "expert, one knowledgeable in the arts of ~"). It and its English derivative s thus describe people who are skilled at dining, particularly the refined conversation expected to accompany Greek symposia. However, the term is shaded by the harsh treatment accorded to professional teachers in Plato's Socratic dialogues, which made the English term into a pejorative.
In English, Athenaeus's work usually known by its Latin form Deipnosophistae but is also variously translated as The Deipnosophists, Sophists at Dinner, The Learned Banqueters, The Banquet of the Learned, Philosophers at Dinner, or The Gastronomers.
The Deipnosophistae professes to be an account, given by Athenaeus to his friend Timocrates, of a series of banquets held at the house of Larensius, a scholar and wealthy patron of the arts. It is thus a dialogue within a dialogue, after the manner of Plato, although each conversation is so long that, realistically, it would occupy several days. Among the numerous guests, Masurius, Zoilus, Democritus, Galen, Ulpian and Plutarch are named, but most are probably to be taken as fictitious personages, and the majority take little or no part in the conversation. If Ulpian is identical with the famous jurist, the Deipnosophistae must have been written after his death in 223; but the jurist was murdered by the Praetorian Guard, whereas Ulpian in Athenaeus dies a natural death.
Prosopographical investigation, however, has shown the possibility of identifying several guests with real persons from other sources;
the Ulpian in the dialog has also been linked to the renowned jurist's father.