Hieroglyphics of Horapollo: Book I: XXIII. How a Man That Has Not Travelled Abroad
Hieroglyphics of Horapollo, tr. Alexander Turner Cory, [1840]
To symbolize a man that has not travelled out of his own country, they delineate an ONOCEPHALUS [creature with an ass's head], because he is neither acquainted with history, nor conversant with foreign affairs.