Here's a saying from
Apostolius, C1.93, with a Latin version from
Clavis Homerica. The image is from
Alciato, Emblemata (1591). Here are some
more Apostolius proverbs.
Ἄκουε τοῦ τέτταρα ὦτα ἔχοντος.
Audi quatuor habentem aures.
Listen to the one who has four ears.