Diocles of Magnesia was an ancient Greek

Ancient Greek

Ancient Greek is the stage of the Greek language in the periods spanning the times c. 9th–6th centuries BC, , c. 5th–4th centuries BC , and the c. 3rd century BC – 6th century AD of ancient Greece and the ancient world; being predated in the 2nd millennium BC by Mycenaean Greek...

 writer from Magnesia

Magnesia

Magnesia , deriving from the tribe name Magnetes, is one of the regional units of Greece. It is part of the region of Thessaly. Its capital is the city of Volos. About 70% of the population of Magnesia live in the Greater Volos area, which is the second-largest city in Thessaly and the third...

, who probably lived in the 2nd or 1st century BC. The claim that he is the Diocles to whom Meleager of Gadara

Meleager of Gadara

Meleager of Gadara was a poet and collector of epigrams. He wrote some satirical prose, now lost, and he wrote some sensual poetry, of which, 134 epigrams survive...

 dedicated his anthology is questionable. He authored works entitled Ἐπιδρομὴ τῶν φιλοσόφων (Philosophers overview) and Περὶ βίων φιλοσόφων (On the lives of philosophers), both important sources for Diogenes Laertius

Diogenes Laertius

Diogenes Laertius was a biographer of the Greek philosophers. Nothing is known about his life, but his surviving Lives and Opinions of Eminent Philosophers is one of the principal surviving sources for the history of Greek philosophy.-Life:Nothing is definitively known about his life...

's work about the lives and opinions of eminent Greek philosophers, especially the Cynics and Stoics (see Diogenes Laertius 2.82; 6.12, 13, 20, 36, 87, 91, 99, 103; 7.48, 162, 166, 179, 181; 9.61, 65; 10.12). Nothing more is known about his life and works.