Plutarch, De Iside et Osiride 77

στολαὶ δʼ αἱ μὲν Ἴσιδος ποικίλαι ταῖς βαφαῖς (περὶ γὰρ ὕλην ἡ δύναμις αὐτῆς πάντα γιγνομένην καὶ δεχομένην, φῶς σκότος, ἡμέραν νύκτα, πῦρ ὕδωρ, ζωὴν θάνατον, ἀρχὴν τελευτήν)· ἡ δʼ Ὀσίριδος οὐκ ἔχει σκιὰν οὐδὲ ποικιλμόν, ἀλλʼ ἓν ἁπλοῦν τὸ φωτοειδές· ἄκρατον γὰρ ἡ ἀρχὴ καὶ ἀμιγὲς τὸ πρῶτον καὶ νοητόν. ὅθεν ἅπαξ ταύτην ἀναλαβόντες ἀποτίθενται καὶ φυλάττουσιν ἀόρατον καὶ ἄψαυστον. ταῖς δʼ Ἰσιακαῖς χρῶνται πολλάκις· ἐν χρήσει γὰρ τὰ αἰσθητὰ καὶ πρόχειρα ὄντα πολλὰς ἀναπτύξεις καὶ θέας αὑτῶν ἄλλοτʼ ἄλλως ἀμειβομένων δίδωσιν. ἡ δὲ τοῦ νοητοῦ καὶ εἰλικρινοῦς καὶ ἁπλοῦ νόησις ὥσπερ ἀστραπὴ διαλάμψασα τῆς ψυχῆς ἅπαξ ποτὲ θιγεῖν καὶ προσιδεῖν παρέσχε. διὸ καὶ Πλάτων καὶ Ἀριστοτέλης ἐποπτικὸν τοῦτο τὸ μέρος τῆς φιλοσοφίας καλοῦσιν, ὡς οἱ τὰ δοξαστὰ καὶ μικτὰ καὶ παντοδαπὰ ταῦτα παραμειψάμενοι τῷ λόγῳ, πρὸς τὸ πρῶτον ἐκεῖνο καὶ ἁπλοῦν καὶ ἄυλον ἐξάλλονται, καὶ θιγόντες ἁπλῶς τῆς περὶ αὐτὸ καθαρᾶς ἀληθείας οἷον ἐντελῆ τέλος ἔχειν φιλοσοφίαν νομίζουσι.

As for the robes, those of Isis are variegated in their colours; for her power is concerned with matter which becomes everything and receives everything, light and darkness, day and night, fire and water, life and death, beginning and end. But the robe of Osiris has no shading or variety in its colour, but only one single colour like to light. For the beginning is combined with nothing else, and that which is primary and conceptual is without admixture; wherefore, when they have once taken off the robe of Osiris, they lay it away and guard it, unseen and untouched. But the robes of Isis they use many times over; for in use those things that are perceptible and ready at hand afford many disclosures of themselves and opportunities to view them as they are changed about in various ways. But the apperception of the conceptual, the pure, and the simple, shining through the soul like a flash of lightning, affords an opportunity to touch and see it but once. For this reason Plato and Aristotle call this part of philosophy the epoptic or mystic part, inasmuch as those who have passed beyond these conjectural and confused matters of all sorts by means of Reason proceed by leaps and bounds to that primary, simple, and immaterial principle; and when they have somehow attained contact with the pure truth abiding about it, they think that they have the whole of philosophy completely, as it were, within their grasp.