“When you dive that deeply into the life and works of a single figure, something interesting happens. You don’t just get to know his writings; you get to know how his mind works. You come to know what he would have said in answer to a particular question or how he would have responded to a particular incident. The reason that, when I have to speak off the cuff, C. S. Lewis just comes pouring out is because, as it were, he is in there, he is part of my thought life.”