From his Confessions:   

Urged to reflect upon myself, I entered under your guidance the innermost places of my being; but only because you had become my helper was I able to do so. I entered, then, and with the vision of my spirit, such as it was, I saw the incommutable light far above my spiritual ken and transcending my mind: not this common light which every carnal eye can see, nor any light of the same order; but greater, as though this common light were shining much more powerfully, far more brightly, and so extensively as to fill the universe. The light I saw was not the common light at all, but something different, utterly different, from all those things. Nor was it higher than my mind in the sense that oil floats on water or the sky is above the earth; it was exalted because this very light made me, and I was below it because by it I was made. Anyone who knows truth knows this light.
O eternal Truth, true Love, and beloved Eternity, you are my God, and for you I sigh day and night. As I first began to know you, you lifted me up and showed me that, while that which I might see exists indeed, I was not yet capable of seeing it. Your rays beamed intensely on me, beating back my feeble gaze, and I trembled with love and dread. I knew myself to be far away from you in a region of unlikeness, and I seemed to hear your voice from on high: “I am the food of the mature: grow, then, and you shall eat me. You will not change me into yourself like bodily food; but you will be changed into me”. Continue Reading…