Plutarch, De Iside et Osiride 32 (part 2)

ἐδήλου δὲ συμβολικῶς ὦ γιγνόμενοι καὶ ἀπογιγνόμενοι, θεὸς ἀναίδειαν μισεῖ· τὸ μὲν γὰρ βρέφος γενέσεως σύμβολον, φθορᾶς δʼ ὁ γέρων ἱέρακι δὲ τὸν θεὸν φράζουσιν, ἰχθύι δὲ μῖσος, ὥσπερ εἴρηται, διὰ τὴν θάλατταν· ἵππῳ ποταμίῳ δʼ ἀναίδειαν· λέγεται γὰρ ἀποκτείνας τὸν πατέρα τῇ μητρὶ βίᾳ μίγνυσθαι. δόξει δὲ καὶ τὸ ὑπὸ τῶν Πυθαγορικῶν λεγόμενον, ὡς ἡ θάλαττα Κρόνου δάκρυόν ἐστιν, αἰνίττεσθαι τὸ μὴ καθαρὸν μηδὲ σύμφυλον αὐτῆς. ταῦτα μὲν οὖν ἔξωθεν εἰρήσθω κοινὴν ἔχοντα τὴν ἱστορίαν.

Such, then, are the possible interpretations which these facts suggest. But now let us begin over again, and consider first the most perspicuous of those who have a reputation for expounding matters more philosophically. These men are like the Greeks who say that Cronus is but a figurative name for Chronus (Time), Hera for Air, and that the birth of Hephaestus symbolizes the change of Air into Fire. And thus among the Egyptians such men say that Osiris is the Nile consorting with the Earth, which is Isis, and that the sea is Typhon into which the Nile discharges its waters and is lost to view and dissipated, save for that part which the earth takes up and absorbs and thereby becomes fertilized. There is also a religious lament sung over Cronus. The lament is for him that is born in the regions on the left, and suffers dissolution in the regions on the right; for the Egyptians believe that the eastern regions are the face of the world, the northern the right, and the southern the left. The Nile, therefore, which runs from the south and is swallowed up by the sea in the north, is naturally said to have its birth on the left and its dissolution on the right. For this reason the priests religiously keep themselves aloof from the sea, and call salt the spume of Typhon; and one of the things forbidden them is to set salt upon a table; also they do not speak to pilots, because these men make use of the sea, and gain their livelihood from the sea. This is also not the least of the reasons why they eschew fish, and they portray hatred by drawing the picture of a fish. At Saïs in …