...We are not to think of the kind of ignorance that just refers to a lack or deprivation of knowledge; that is like the kind of darkness that can be dispelled by light. Just as there is a higher darkness at the top of Sinai, a pregnant and shining darkness, so there is another kind of ignorance, a holy unknowing that transcends our knowing of all that is knowable... Whereas negation or unsaying is a process, a continual practice along the whole of the ascent (or, in the more passive language these texts [of the Dionysian corpus] prefer, the process of being ‘lifted up’), unknowing not only describes the repeated decision ‘not to know’ ideas along the way but also, and more often, a state of being, the mental state of one who has come into the cloud atop Sinai. If God is beyond knowledge, then unknowing is the state of mind in which we meet him...
So unknowing is different from ignorance, both in that it knows it cannot know and also in that it has gone beyond knowledge, has digested the wisdom of knowledge about God’s activities all the way up to their highest point, and has kept itself free of entanglement in concepts. In the state of holy unknowing, the mind is not a blank: it is full of wonder and glory.
Radical negation is not radical negativity: in fact it is the diametrical opposite of that. Only by telling of what is not, only by unknowing all we thought we knew of God, can we know God.
There is nothing we can say of God that is not less than God; and if we are to step out onto the mountain with Elijah (1 Kings 19) everything we knew of God turns out to be empty. Only in the hollowing out of what actually is can we find the silence of God, who is the ground of being itself; and that is what prayer is for.
