In Plutarch, Moralia, Praecepta gerendae reipublicae (tr. H. N. Fowler, 1936). Plutarch also quotes Demosthenes' reply, "Yes, your Athena was caught in adultery last year!" Cited by Erasmus, Adagia, 1, 1, 40: Tritissimum apud Latinos autores adagium Ὗς τὴν Ἀθηνᾶν, id est Sus Mineruam, subaudiendum 'docet' aut 'monet'. See also: Theocritus, Idylls, 5, l. 23, Ὗς ποτ᾽ Ἀθαναίαν ἔριν ἤρισεν.—"The sow defied Athene!" (tr. Andrew Lang, 1889)—cited in Erasmus, Adagia, 1, 1, 41, Sus cum Minerva certamen https://en.wikiquote.org/wiki/Demades