Who is blind to the One, is completely blind to all. Who sees the One, has vision of all - and at any rate is removed from their vision, and in the vision of all becomes, and outside of all he is. Inside the One he sees everything, and while being in everything nothing of any thing does he see.

Whoever sees in the One through the One, sees clearly himself and all men and all things, and hidden inside the One, he doesn't see anything of any thing.

Who has not worn the Image of our Lord Jesus Christ, the heavenly man and God, inside his mind and spiritual man, sensing well and knowing Him, is just blood so far and flesh, the sense of spiritual glory unable by words to receive, just as who are born blind, unable are to know the light of the sun by words alone.

Practical and Theological Chapters 4 & 51-53

Ὁ τυφλός πρός τό ἕν τυφλός ὅλως πρός πάντα ἐστίν, ὁ δέ βλέπων ἐν τῷ ἑνί ἐν θεωρίᾳ τῶν πάντων ἐστί τῆς θεωρίας τε πάντως ἀπέχεται, καί ἐν τῇ θεωρίᾳ τῶν πάντων γίνεται, καί τῶν θεωρουμένων ἔξω ἐστίν ἐν τῷ ἑνί οὗτος ὤν τά πάντα ὁρᾷ, καί ἐν πᾶσιν ὤν οὐδέν τῶν πάντων ὁρᾷ.

Ὁ βλέπων ἐν τῷ ἑνί διά τοῦ ἑνός καί ἑαυτόν καί πάντας καί ἅπαντα καθορᾷ, καί κεκρυμμένος ὤν ἐν αὐτῷ, οὐδέν τῶν πάντων ὁρᾷ.

Ὁ μή τήν εἰκόνα τοῦ Κυρίου ἡμῶν Ἰησοῦ Χριστοῦ, τοῦ ἐπουρανίου ἀνθρώπου τε καί Θεοῦ, ἐν τῷ λογισμῷ καί νοερῷ ἀνθρώπῳ εὐαισθήτως καί γνωστῶς ἐνδυσάμενος, αἷμα μόνον ἐστίν ἔτι καί σάρξ, πνευματικῆς δόξης αἴσθησιν μή δυνάμενος διά τοῦ λόγου λαβεῖν, καθάπερ καί οἱ ἐκ γενετῆς τυφλοί τό τοῦ ἡλίου φῶς διά λόγου μόνον γνῶναι οὐ δύνανται.

Cf. ORIGEN : These things must happen to each of us mystically, You will find a divine perception ||| ATHANASIUS THE GREAT : To cure and teach the suffering ||| GREGORY THE THEOLOGIAN : God with Gods is being united ||| GREGORY PALAMAS : Calling everything near Him