Cloud Cuckoo Land

Cloud Cuckoo Land is a 2021 novel by American author Anthony Doerr, first published in September of that year in the United States by Charles Scribner's Sons and in the United Kingdom by Fourth Estate. Its central thread is an ancient Greek codex, also called Cloud Cuckoo Land, which links five characters separated by eight centuries. The book-within-a-book is a fictional work that Doerr attributes to the second-century novelist Antonius Diogenes. It recounts the journey of Aethon, a shepherd searching for a paradise in the sky, who in his travels is transformed into a donkey, a sea bass and finally a crow, which lets him reach the gates of the city in the clouds.

The novel moves between its stories in non-chronological order. In fifteenth-century Byzantine Constantinople, Anna, an orphaned girl living with her older sister, secretly learns to read Greek and sells old manuscripts to Italian collectors. As the Ottoman army draws closer to the city, she finds a copy of the codex and keeps it. Her story intertwines with that of Omeir, a boy born with a cleft lip who grows up in a remote cottage, serves in the army and, after the fall of the city, meets Anna again. Together they build a family, and she passes the story of Aethon on to their sons.

In mid-twentieth-century Lakeport, Idaho, Zeno Ninis, a shy young man who finds refuge in the library, is captured during the Korean War. In the prison camp he befriends Rex, an English classicist with whom he falls in love and who introduces him to the Greek language. After the war Zeno works at the Lakeport library and, following Rex's death, tries to translate the surviving fragments of the codex. In 2020 he befriends a group of fifth-graders who decide to stage the story as a play.

A third strand follows Seymour, an autistic boy raised by a single mother, attached to a wild owl and increasingly distressed by deforestation. His involvement with a group of ecoterrorists leads to an act that changes the lives of Zeno and the children. Seymour is imprisoned and spends decades working for a corporation developing a virtual map of Earth, where he cleverly conceals real images of climate-driven decline.

The most distant story is set in the twenty-second century aboard the generation starship Argos, bound for a distant planet. Konstance, a girl who has heard the tale of Aethon from her father, is left isolated after a plague, together with the ship's artificial intelligence. Exploring the virtual library, she uncovers the origins of the story, its link to her ancestors and the true nature of the Argos, which turns out to be an advanced bunker in Greenland.

The book blends historical fiction, science fiction and reflection on the climate crisis, and argues for reading and storytelling as means of survival. Critics responded warmly: Publishers Weekly and Kirkus Reviews gave it starred reviews, and several newspapers praised its ambition and its ability to unite eight centuries of narrative. Some reviewers were more critical, finding certain sections, especially those set in space, uneven.