Siro (also Syro, Siron, or Syron; fl. c. 50 BC) was an Epicurean philosopher who lived in Naples.
He was a teacher of Virgil, [1] and taught at his school in Naples. There are two poems attributed to Virgil in the Appendix Vergiliana, [2] which mention Siro, and where the author speaks of seeking peace in the company of Siro:
I am setting sail for the havens of the blest to seek the wise sayings of great Siro, and will redeem my life from all care. [3]
Cicero also mentions Siro several times and speaks of Siro along with Philodemus as being "excellent citizens and most learned men." [4] The 5th-century commentator Servius claimed that Siro was commemorated in Virgil's sixth Eclogue as the character Silenus. [5]