This is a pricey book (so you might want to check it out of your local library), but it’s certainly worth tracking down, simply because Underhill’s letters are such a delight. As one of the foremost British writers on Christian spirituality and mysticism in the first four decades of the twentieth century, Underhill published a large array of books, some scholarly, some devotional, but nearly all suffused with her elegance and reserve. Thankfully, in her letters — ranging from loving missives to her husband, to fascinating correspondence with people like C. S. Lewis, Rufus Jones, or the Archbishop of Canterbury — we see a less guarded Evelyn Underhill, where she is willing to scold Lewis for his chauvinistic attitude toward animals or “purr” when telling her husband about a good review one of her books received. What is perhaps most important of all is how these letters reveal her genius as a spiritual director, providing common-sense advice and insightful encouragement to those who wrote to her seeking counsel. While this is not the first volume of Underhill’s letters to be published, its careful annotations make it the essential collection.
The Making of a Mystic: New and Selected Letters (Urbana, IL: University of Illinois Press, 2010)