Which Greek Stoic philosopher mentioned two of the four subgroups of the Helvetians that failed in their migration attempt to Gaul?
Posidonius Posidonius (Greek: Ποσειδώνιος, "Poseidonios", meaning "of Poseidon") "of Apameia" (ὁ Ἀπαμεύς) or "of Rhodes" (ὁ Ῥόδιος) (c. 135 BCE – c. 51 BCE), was a Greek Stoic philosopher, politician, astronomer, geographer, historian and teacher native to Apamea, Syria.
Hegias Hegias (Greek: Ἡγίας ) was a Neoplatonist philosopher who lived in the 5th and 6th centuries. He may have been the great-grandson or great-great-grandson of Plutarch of Athens, the founder of the Neoplatonist Academy in Athens. Hegias studied under Proclus at the school in Athens, when Proclus was an old man c. 480. Proclus showed him great favour, and considered him worthy of hearing his lectures on the Chaldean Oracles.