Book VII, Chapter 10, conclusion

"I am the food of grown men. Grow and you shall feed upon me. And you will not, as with the food of the body, change me into yourself, but you will be changed into me." And I learned that Thou, for iniquity, chastenest man and Thou madest my soul to consume away like a spider." And I said, "Is truth therefore nothing because it is not extended through any kind of space, whether finite or infinite?" And from far away you cried out to me, "I am that I am." And I heard, as one hears things in the heart, and there was no longer any reason at all for me to doubt. I would sooner doubt my own existence than the existence of that truth which is clearly seen being understood by those things which are made."