Plotinus, Enneads 1.6 (DIORISIS sentence 439)

Ἐφετὸν μὲν γὰρ ὡς ἀγαθὸν καὶ ἡ ἔφεσις πρὸς τοῦτο, τεῦξις δὲ αὐτοῦ ἀναβαίνουσι πρὸς τὸ ἄνω καὶ ἐπιστραφεῖσι καὶ ἀποδυομένοις ἃ καταβαίνοντες ἠμφιέσμεθα οἷον ἐπὶ τὰ ἅγια τῶν ἱερῶν τοῖς ἀνιοῦσι καθάρσεις τε καὶ ἱματίων ἀποθέσεις τῶν πρὶν καὶ τὸ γυμνοῖς ἀνιέναι ἕως ἄν τις παρελθὼν ἐν τῆι ἀναβάσει πᾶν ὅσον ἀλλότριον τοῦ θεοῦ αὐτῶι μόνωι αὐτὸ μόνον ἴδηι εἰλικρινές, ἁπλοῦν, καθαρόν, ἀφʼ οὗ πάντα ἐξήρτηται καὶ πρὸς αὐτὸ βλέπει καὶ ἔστι καὶ ζῆι καὶ νοεῖ ζωῆς γὰρ αἴτιος καὶ νοῦ καὶ τοῦ εἶναι.