From Porphyry’s essay, On the Cave of the Nymphs 35

“In Plato, the water, the sea and the storm are material matter. For this reason, I think, Homer named the harbor “Phorkus’” (“and this is the harbor of Phorkus”) after the sea-god whose daughter, Thoôsa, he genealogized in the first book of the Odyssey. The Kyklôps is her son whose eye Odysseus blinded. [Homer named the harbor thus] so that right before his home [Odysseus] would receive a reminder of his mistakes. For this reason, the location under the olive tree is also fitting for Odysseus as a suppliant of the god who might win over his native deity through suppliancy.

For it would not be easy for one who has blinded [the spirit] and rushed to quell his energy to escape this life of the senses; no, the rage of the sea and the material gods pursues anyone who has dared these things. It is right first to appease these gods with sacrifices, the labors of a beggar, and endurance followed by battling through sufferings, deploying spells and enchantments and changing oneself through them in every way in order that, once he has been stripped of the rags he might restore everything. And thus one may not escape from his toils, but when he has emerged from the sea altogether that his thoughts are so untouched of the sea and material matters, that he believes that an oar is a winnowing fan because of his total inexperience of the tools and affairs of the sea.”

πόντος δὲ καὶ θάλασσα καὶ κλύδων καὶ παρὰ Πλάτωνι ἡ ὑλικὴ σύστασις. διὰ τοῦτ’, οἶμαι, καὶ τοῦ Φόρκυνος ἐπωνόμασε τὸν λιμένα·

                    ‘Φόρκυνος δέ τίς ἐστι λιμήν,’

ἐναλίου θεοῦ, οὗ δὴ καὶ θυγατέρα ἐν ἀρχῇ τῆς ᾿Οδυσσείας τὴν Θόωσαν ἐγενεαλόγησεν, ἀφ’ ἧς ὁ Κύκλωψ, ὃν ὀφθαλμοῦ ᾿Οδυσσεὺς ἀλάωσεν, ἵνα καὶ ἄχρι τῆς πατρίδος ὑπῇ τι τῶν ἁμαρτημάτων μνημόσυνον. ἔνθεν αὐτῷ καὶ ἡ ὑπὸ τὴν ἐλαίαν καθέδρα οἰκεία ὡς ἱκέτῃ τοῦ θεοῦ καὶ ὑπὸ τὴν ἱκετηρίαν ἀπομειλισσομένῳ τὸν γενέθλιον δαίμονα. οὐ γὰρ ἦν ἁπλῶς τῆς αἰσθητικῆς ταύτης ἀπαλλαγῆναι ζωῆς τυφλώσαντα αὐτὴν καὶ καταργῆσαι συντόμως σπουδάσαντα, ἀλλ’ εἵπετο τῷ

ταῦτα τολμήσαντι μῆνις ἁλίων καὶ ὑλικῶν θεῶν, οὓς χρὴ πρότερον ἀπομειλίξασθαι θυσίαις τε καὶ πτωχοῦ πόνοις καὶ καρτερίαις, ποτὲ μὲν διαμαχόμενον τοῖς πάθεσι, ποτὲ δὲ γοητεύοντα καὶ ἀπατῶντα καὶ παντοίως πρὸς αὐτὰ μεταβαλλόμενον, ἵνα γυμνωθεὶς τῶν ῥακέων καθέλῃ πάντα καὶ οὐδ’ οὕτως ἀπαλλαγῇ τῶν πόνων, ἀλλ’ ὅταν παντελῶς ἔξαλος γένηται καὶ ἐν ψυχαῖς ἀπείροις θαλασσίων καὶ ἐνύλων ἔργων, ὡς πτύον εἶναι ἡγεῖσθαι τὴν κώπην διὰ τὴν τῶν ἐναλίων ὀργάνων καὶ ἔργων παντελῆ ἀπειρίαν.

Robert Lamberton 1986, 131 [Homer the Theologian]: “The bungling, dimwitted, sensual giant of book 9 is, then, a projection into the myth of the life of the senses—specifically Odysseus’ own life in this physical universe. The blinding of Polyphemus is a metaphor for suicide…The cyclops becomes a part of Odysseus—a part he wants desperately to escape—but his ineptitude in handling his escape at that early point in his career involves him in an arduous spiritual journey.”