From John Piper’s Don’t Waste Your Life, via http://www.rachelduke.com:
“Lewis gave me an intense sense of the “realness” of things. The preciousness of this is hard to communicate. To wake up in the morning and be aware of the firmness of the mattress, the warmth of the sun’s rays, the sound of the clock ticking, the sheer being of things (“quiddity” as he calls it). He helped me become alive to life…He made me more alive to beauty. He put my soul on notice that there are daily wonders that will waken worship if I open my eyes. He shook my dozing soul and threw the cold water of reality in my face, so that life and God and heaven and hell broke into my world with glory and horror.
He exposed the sophisticated intellectual opposition to objective being and objective value for the naked folly that it was. The philosophical king of my generation had no clothes on, and the writer of children’s books from Oxford had the courage to say so.
You can’t go on “seeing through” things forever. The whole point of seeing through something is to see something through it. It is good that the window should be transparent, because the street or garden beyond it is opaque. How if you saw through the garden too? It is no use trying to “see through” first principles. If you see through everything, then everything is transparent. But a wholly transparent world is an invisible world. To “see through” all things is the same as not to see.
Oh, how much more could be said about the world as C.S. Lewis saw it and the way he spoke. He has his flaws, some of them serious. But I will never cease to thank God for this remarkable man who came into my path at the perfect moment.”