Fairy-stories are not just for children, as anyone who has read Tolkien will know. In his essay 'On Fairy-Stories', Tolkien discusses the nature of fairy-tales and fantasy and rescues the genre from those who would relegate it to juvenilia.

This is aptly and elegantly illustrated in the haunting short story, 'Leaf by Niggle', which recounts the story of the artist, Niggle, who has 'a long journey' to make and is seen as an allegory of Tolkien 's life.

The poem Mythopoeia relates an argument between two unforgettable characters as they discuss the making of myths.

Written in the same period when 'The Lord of the Rings' was beginning to take shape, these two works show Tolkien's mastery and understanding of the art of sub-creation, the power to give fantasy the inner consistency of reality. Tree and Leaf is an eclectic, amusing, provocative and entertaining collection of works which reveals the diversity of J.R.R. Tolkien's imagination, the depth of his knowledge of English history, and the breadth of his talent as a creator of fantastic fiction.