Of the Inklings, C.S. Lewis has had the greatest impact on generations of Christian scholars. Inside of the Torrey leadership, I would guess he is the author with the greatest shared impact on all of us.
He certainly changed my life. I am a Christian in great part because of the role his works had in shaping my imagination. I am the kind of Christian I am, because Lewis wrote and lived as he did.
There is no moment I can remember when Lewis has not been one of my primary literary guides. As a child my basement room had a map of Narnia carefully rolled out on a table in the middle of my work space. My first club formed with my brother and a dear cousin attempted a unification of Narnia with all our other favorite writers. We played at Narnia . . . hard enough to scar ourselves with metal swords carefully constructed out of scrap metal.