“One thing I am sure of. All seven of my Narnia books, and my three science fiction books, began with seeing pictures in my head. At first they were not a story, just pictures. The Lion [meaning The Lion, the Witch, and the Wardrobe] all began with a picture of a faun carrying an umbrella and parcels in a snowy wood. This picture had been in my head since I was about sixteen. Then one day, when I was about forty, I said to myself: ‘Lets try to make a story about it.’
At first I had very little idea how the story would go. But then suddenly Aslan came bounding into it. I think I had been having a good many dreams of lions about that time. Apart from that, I don’t know where the Lion came from or why he came. But once He was there He pulled the whole story together, and soon He pulled the six other Narnian stories in after him.” —C.S. Lewis, “It All Began with a Picture” in C.S. Lewis Essay Collection & Other Short Pieces (HarperCollins Publishers, 2000), p. 529
No Other Boast 