C. S. Lewis was one of the most influential thinkers and writers of the twentieth century. But who influenced C. S. Lewis? What were the sources of his inspiration? Who were his spiritual mentors? Drawn from Lewis’s personal library, annotations, and references from his writings, this book includes more than 200 selections from literary giants such as Dante, Augustine, and Chaucer, as well as more contemporary writers such as G. K. Chesterton, Dorothy L. Sayers, George MacDonald, and J.R.R. Tolkien, providing a vast array of inspiration from those who have shone forth as messengers of light in Lewis’s own thinking, writing, and spiritual growth.