How we cite our quotes: (Book.Section.Paragraph)
Quote #7
Although I could form not the vaguest idea, even with the help of allegory, of how there could be substance that was spiritual, nevertheless I was glad that all this time I had been howling my complaints not against the Catholic faith but against something quite imaginary which I had thought up in my own head. (VI.3.2)
Whoops, looks like Augustine misread the Scriptures. You'll notice how he says that he still doesn't understand how God can exist without substance, but he accepts this idea nonetheless. So we're seeing Augustine revise some of his "I have to absolutely positively understand before I believe" attitude.
Quote #8
You alone are the life which never dies and the wisdom that needs no light besides itself, but illumines all who need to be enlightened, the wisdom that governs the world, down to the leaves that flutter on the trees. (VII.6.1)
What does it mean that such wisdom "needs no light besides itself"? This quote kind of reminds us of when Augustine talks about having his back to the light, so that he can only see what it illumines. In fact, that's the exact word he uses both there and here. Augustine is also talking about how God is unchangeable and has always existed… In other words, the light of God's wisdom was always there and always will be, and will be the source of all other "light."
Quote #9
And while we spoke of the eternal Wisdom, longing for it and straining for it with all the strength of our hearts, for one fleeting instant we reached out and touched it. (IX.10.2)
Look how Augustine contrasts eternal wisdom with this "one fleeting instant" of his own understanding. See, humans can't escape the constraints of time, which actually affect their understanding of everything. Oh yeah, and Wisdom is capitalized here because he's referring to God, or God's Wisdom, rather than just the general idea of wisdom.