moving is nous, and as essence it is οὐσία. All emanation or "division," and all return or "analysis" begins and ends in οὐσία. It is known only in this exitus-reditus process; immediately it is knowable neither generically nor in particulars. According to Wayne J. Hankey, the ambiguity that was in Boethius is absent from Eriugena, who is far more confident in his trinitarianism: οὐσία names the One, the Godhead shared between persons. The Divine "nothingness by excellence" is "beyond all things which are and which are not". By plunging into this divine nature, which is said not to be, "because of its ineffable excellence and incomprehensible infinity”, Eriugena follows Pseudo-Dionysius's apophaticism into its extremes towards "the ineffable and incomprehensible and inaccessible brilliance of the divine goodness, unknown to any intellect", and so beyond the activity of intellect. The mystical attainment of this ascent to God is through a learning of ignorance; a trained effort towards going beyond discursive thought. According to Trouillard, learned ignorance is essential to human dignity and its cosmic role:God does not know himself. And the reason for this ignorance, is that God is nothing… God… remains… inaccessible to all thought and is communicable only as motion. Therefore we distinguish in God, so to speak, two levels: that of the Deity, which is an irremediably obscure centre, and that of God the Creator, who, by the rays which he projects, makes himself known through his creatures… Our spirit is in itself a silent spontaneity and, nonetheless, manifests itself to the outside and to itself by signs and figures… Because it is in the image of God our mind is nothingness, and this is why it expresses the totality of the universe. Becoming the meanings which it emits, it creates itself in them, and nevertheless however refuses to define itself by its own creations.God is intimately woven to the human as the human is to Divinity. Eriugena came to understand human nature as more than being, "that in which all things could be found," but rather became; “that in which all things are created.” The human is the workshop of creation; as the imago Dei, the human is the image of the creator. It is the medium in which God knows and creates himself out of his own unknowing nothingness, precisely because, uniquely among beings, the human possesses all the forms of knowing and ignorance, including sensation. Donald