When We Cease to Understand the World by Benjamín Labatut Review: A Haunting Blend of Science and Fiction

When We Cease to Understand the World is a work of literary fiction — or, more precisely, a hybrid form that sits between fiction and narrative nonfiction — comprising a series of interlocking pieces, each centered on one or two scientists and their struggles to advance human knowledge. Originally written in Spanish as Un Verdor Terrible (literally, "A Terrible Greenness") and published by Anagrama in 2020, it was translated into English by Adrian Nathan West and published by New York Review Books in 2021. Chilean writer Benjamín Labatut, who has two previous works not yet translated into English, draws on the lives of figures including Fritz Haber, the chemist whose synthesis of nitrogen fertilizer fed billions but whose work also enabled chemical weapons, and Werner Heisenberg, the physicist at the heart of quantum mechanics. The book's premise, as described in critical coverage, is that Labatut was inspired by the limitations and misunderstandings inherent in science and wanted to use fictional elements to animate accounts of real scientists.

The book's thematic spine is sacrifice — specifically the psychic and ethical costs borne by those who push at the boundaries of what can be known or made. As critics described it in her coverage, the work grapples with science's moral quandaries, tracing how discoveries that transform civilization can simultaneously corrode, or destroy, the people who make them. Labatut opens, according to Franklin's account, with the glass vials of cyanide allegedly distributed at the Berlin Philharmonic's last Nazi-era performance, then traces the chemistry back to experiments conducted in Berlin in the first decade of the eighteenth century — a structural choice that illustrates how the book moves: from consequence backward to origin, implicating each discovery in what follows. The thread running through these pieces is not triumphalism about scientific genius but a reckoning with the darkness that can accompany it.

The book's critical standing is substantial and well-documented. The critics named it one of its 10 Best Books of 2021, and the New York Times subsequently ranked it 83rd on its 2024 list of the 100 Best Books of the 21st Century. Critics reviewed it under the framing of "the dark side of science," and critics described it as "haunting" and compared it to the work of W.G. Sebald — a comparison that situates Labatut in a lineage of writers who blur historical documentation with invented interiority. The book also appeared on the shortlist for the International Booker Prize, noted in The New Yorker's coverage, which speaks to its reception beyond the English-language market.

The book's most distinctive and most discussed quality is its refusal to draw a clean line between the historical and the fictional. Ruth Franklin, writing in critical coverage*, made the question of "what is real and what is imagined" central to her engagement with the work. Labatut does not signal the transitions — readers encounter documented historical facts alongside invented scenes and internal states, sometimes within the same passage. This is not a flaw in the conventional sense but a feature of the book's design: it asks readers to inhabit the same uncertainty that, in Labatut's telling, the scientists themselves faced as their theories outran intuition. For readers who prefer clear demarcation between biography and fiction, however, this method can be genuinely disorienting, and the ethical stakes of fictionalizing real figures' inner lives are ones the book invites but does not fully resolve.

When We Cease to Understand the World is not a science book in any instructional sense, nor is it conventional biography or historical fiction. It is best understood as literary fiction that takes scientific history as its raw material, written for readers drawn to what critics called its "Sebaldian" mode — meditative, formally unconventional, willing to sit with ambiguity. Readers who come to it expecting narrative momentum or resolved moral verdicts will find neither; the book accumulates dread and wonder in roughly equal measure. At 192 pages in the New York Review Books edition, it is compact, but the compression is deliberate: each piece carries significant weight, and the cumulative effect across the whole is what reviewers have pointed to as the work's real achievement. Adrian Nathan West's translation has drawn no notable criticism from the sources available, and the book's English-language reception has been as strong as its Spanish-language origins would suggest.