Letters to Malcolm was the last book which C.S. Lewis wrote. It was initially published in 1964, months after he died (on the day President Kennedy was assassinated).
The Times Literary Supplement published a review about Letters to Malcolm in its February 27, 1964 issue. The reviewer discusses the "secret" of Jack Lewis' ability to reach his readers:
...[it] probably lay in the fact that he had himself found the way to Christian belief with great difficulty; he genuinely knew what it was like not to believe; he could never therefore quite see himself in the position of someone who, untroubled by doubts, simply hands out the Faith.
Click on the image for a better view.
Image online via Amazon.