J. R. R. Tolkien’s famous book “The Lord of the Rings” has become a “tale of tales” for several generations of readers, shaping their life values. The impact of The Lord of the Rings on the spiritual world of a huge number of people is obvious, but most do not even know that the author was a deeply religious Catholic. Numerous neo-pagan fans of Tolkien's work attribute their views on nature and spirituality, good and evil, to the book. "The Secret Flame" is the key to the secrets and mysteries of The Lord of the Rings. The author points out the deep significance of the works of Tolkien, one of the few writers who managed to open the world of fantasy for theological search.