Strabo, Geography 1.2.8
“For every illiterate and uneducated person is in some way a child and delights in the same way in stories—similar as well is the case of a person educated moderately. For this person is not ruled by reason, and this is the custom from childhood. Since the marvelous is not only sweet but also frightening, there is a need for both types for children and those in the next age. We use the sweet stories to encourage children and the the frightening ones to discourage them. The Lamia, for example, is a story like this, as is that of Ephialtes and Mormolukê.
Many of those who live in cities are compelled toward certain action by incitements of myths when they hear the poets praising the mythical courageous deeds—the deeds of Herakles or Theseus—or the honors accorded from the gods or when they see Zeus in a picture, or cult image, or images signaling the mythical tale in some way. To discourage them, they have tales whenever there are punishments from the gods and fears or threats or things they have received through some tale or unexpected punishment even if they believe it has happened to other people.
For it is not possible to persuade the mass of women and every kind of common person by reason with philosophy and to encourage them to piety, and righteousness, and fidelity; but it is necessary to do this through fear. And that is not [possible] without myth-making and wonder. For the lighting, aegis, trident, torches, dragons, thyrsis-shaking, weapons of the gods, the myths and all the ancient theology, these are all things those who found states use as bogeymen for childish minds.
This was myth-making and it was a good support for the commonwealth and the political arrangement of life and the inquiry of the way things really are; the ancients pursued their childhood’s education into their later years and they supposed that every age could become sufficiently prudent through poetry. In later years, the writing of history and then philosophy entered our consciousness. But these work only for the few; poetry is more useful to the public and can fill the theaters. The poetry of Homer supersedes: but the first historians and natural philosophers were myth-makers as well.”
καὶ ἰδιώτης δὲ πᾶς καὶ ἀπαίδευτος τρόπον τινὰ παῖς ἐστι φιλομυθεῖ τε ὡσαύτως: ὁμοίως δὲ καὶ ὁ πεπαιδευμένος μετρίως: οὐδὲ γὰρ οὗτος ἰσχύει τῷ λογισμῷ, πρόσεστι δὲ καὶ τὸ ἐκ παιδὸς ἔθος. ἐπεὶ δ᾽ οὐ μόνον ἡδὺ ἀλλὰ καὶ φοβερὸν τὸ τερατῶδες, ἀμφοτέρων ἐστὶ τῶν εἰδῶν χρεία πρός τε τοὺς παῖδας καὶ τοὺς ἐν ἡλικίᾳ: τοῖς τε γὰρ παισὶ προσφέρομεν τοὺς ἡδεῖς μύθους εἰς προτροπήν, εἰς ἀποτροπὴν δὲ τοὺς φοβερούς: ἥ τε γὰρ Λάμια μῦθός ἐστι καὶ ἡ Γοργὼ καὶ ὁ Ἐφιάλτης καὶ ἡ Μορμολύκη.
οἵ τε πολλοὶ τῶν τὰς πόλεις οἰκούντων εἰς μὲν προτροπὴν ἄγονται τοῖς ἡδέσι τῶν μύθων, ὅταν ἀκούωσι τῶν ποιητῶν ἀνδραγαθήματα μυθώδη διηγουμένων, οἷον Ἡρακλέους ἄθλους ἢ Θησέως, ἢ τιμὰς παρὰ θεῶν νεμομένας, ἢ νὴ Δία ὁρῶσι γραφὰς ἢ ξόανα ἢ πλάσματα τοιαύτην τινὰ περιπέτειαν ὑποσημαίνοντα μυθώδη: εἰς ἀποτροπὴν δέ, ὅταν κολάσεις παρὰ θεῶν καὶ φόβους καὶ ἀπειλὰς ἢ διὰ λόγων ἢ διὰ τύπων ἀοράτων τινῶν προσδέχωνται, ἢ καὶ πιστεύωσι περιπεσεῖν τινας.
οὐ γὰρ ὄχλον γε γυναικῶν καὶ παντὸς χυδαίου πλήθους ἐπαγαγεῖν λόγῳ δυνατὸν φιλοσόφῳ καὶ προσκαλέσασθαι πρὸς εὐσέβειαν καὶ ὁσιότητα καὶ πίστιν, ἀλλὰ δεῖ καὶ διὰ δεισιδαιμονίας: τοῦτο δ᾽ οὐκ ἄνευ μυθοποιίας καὶ τερατείας. κεραυνὸς γὰρ καὶ αἰγὶς καὶ τρίαινα καὶ λαμπάδες καὶ δράκοντες καὶ θυρσόλογχα τῶν θεῶν ὅπλα μῦθοι καὶ πᾶσα θεολογία ἀρχαϊκή: ταῦτα δ᾽ ἀπεδέξαντο οἱ τὰς πολιτείας καταστησάμενοι μορμολύκας τινὰς πρὸς τοὺς νηπιόφρονας.
τοιαύτης δὲ τῆς μυθοποιίας οὔσης καὶ καταστρεφούσης εἰς τὸ κοινωνικὸν καὶ τὸ πολιτικὸν τοῦ βίου σχῆμα καὶ τὴν τῶν ὄντων ἱστορίαν, οἱ μὲν ἀρχαῖοι τὴν παιδικὴν ἀγωγὴν ἐφύλαξαν μέχρι τῶν τελείων ἡλικιῶν, καὶ διὰ ποιητικῆς ἱκανῶς σωφρονίζεσθαι πᾶσαν ἡλικίαν ὑπέλαβον: χρόνοις δ᾽ ὕστερον ἡ τῆς ἱστορίας γραφὴ καὶ ἡ νῦν φιλοσοφία παρελήλυθεν εἰς μέσον. αὕτη μὲν οὖν πρὸς ὀλίγους, ἡ δὲ ποιητικὴ δημωφελεστέρα καὶ θέατρα πληροῦν δυναμένη, ἡ δὲ δὴ τοῦ Ὁμήρου ὑπερβαλλόντως: καὶ οἱ πρῶτοι δὲ ἱστορικοὶ καὶ φυσικοὶ μυθογράφοι.