Which C.S. Lewis work was published posthumously in 1964 under the title Letters to Malcolm: Chiefly on Prayer?

Letters to Malcolm: Chiefly on Prayer was the C.S. Lewis work published posthumously in 1964.

Letters to Malcolm: Chiefly on Prayer was published in 1964, after Lewis’s death in 1963. Written as a series of imagined letters to a correspondent named Malcolm, the book discusses prayer, worship, church practice, suffering, and the relationship between private devotion and shared Christian life.

The work is not a conventional theological treatise. Its letter format gives Lewis room to raise questions, qualify arguments, and move between personal reflection and Christian doctrine. Because the book was edited and published after his death, it is often discussed alongside his other late religious writings rather than his fiction.

It is easy to confuse the title with The Four Loves or A Grief Observed, both late Lewis works with personal and spiritual themes. Letters to Malcolm is specifically centered on prayer and was issued posthumously.