Keller identifies C.S. Lewis as the "king of illustration" as opposed to Jonathan Edwards, whom he labels the "king of imagery." Lewis has the ability to craft a "sparkling" illustration of Christian truth. Keller explains how Lewis takes the abstract truth and clarify with the concrete illustration.
On the importance of building illustrations, Keller shares a humorous anecdote when Flannery O'Conner was asked if she could put her story into a nutshell using one sentence. Her response was, "if I could put it in one sentence, I would not have to write the story!"
Tim Keller recommends starting with the following C.S. Lewis works:
- Mere Christianity - Why you should believe
- Screwtape Letters - Illustration of how Christians believe
- The Great Divorce - Way of getting the Christian truth across
- Chronicles of Narnia - Myth and Storytelling
- Abolition of Man - Lewis saw what was coming in Western Civilization