Regum et imperatorum apophthegmata
Plutarch
Plutarch. Plutarchi Chaeronensis Moralia, Vol II. Vernardakēs, Grēgorios N., editor. Leipzig: Teubner, 1889.
Πέρσαι τῶν γρυπῶν ἐρῶσι διὰ τὸ Κῦρον ἀγαπηθέντα μάλιστα τῶν βασιλέων γεγονέναι γρυπὸν τὸ εἶδος.