Every Living Thing Book Summary - Every Living Thing Book explained in key points

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Every Living Thing summary

Name: Every Living Thing
Rating: 4.7 (33 reviews)
Author: Jason Roberts

James Herriot

The Great and Deadly Race to Know All Life

4.7 (33 ratings)

19 mins

Brief summary

Every Living Thing by James Herriot is a heartwarming collection of stories about the author's experiences as a country vet. Filled with humor, compassion, and love for animals, it offers a delightful glimpse into the joys and challenges of caring for creatures both big and small.

Topics

Veterinary Medicine Animals Change & Evolution Nature vs. Nurture Plants & Trees Natural Sciences Life Sciences

Table of Contents

Every Living Thing
Summary of 5 key ideas

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Key idea 1 of 5

What’s in it for me? Discover the brilliant and twisted legacy of the first race to name every living thing.

Imagine believing that you could identify and classify every species that exists. Every beetle in every forest, every fish in every ocean, every flower on every mountainside. Two men in the 1730s actually believed they could do this. They thought the world contained about ten thousand species at most. They were both spectacularly wrong.

Carl Linnaeus in Uppsala, Sweden and Georges-Louis Leclerc, Comte de Buffon in Paris, France became rivals in this quest to catalog all of creation. And you know their work even if you don’t know their names. When you call humans, Homo sapiens, you are using the classification system Linnaeus invented. When you understand manmade climate change, or that species can go extinct, you’re actually seeing consequences that Buffon predicted 250 years ago.

The circumstances of their deaths would elevate one of them to fame, and bury the other in obscurity. And the wrong ideas would flourish for centuries for all the wrong reasons.

This Blink tells the story of how two men trying to organize life on Earth ended up defining what it means to be human, and how the accidents of history gave us the worst of one, and lost the best of the other.

A grand vision

In Europe in the 1730s, nature was an incomprehensible chaos. No one knew how many types of creatures existed, and no one agreed on what to call them. A rose might have twelve different names in twelve different towns. A sparrow in Spain had nothing in common with a sparrow in Sweden, at least not on paper. Into this confusion stepped two men with the same impossible dream. They would bring order to the natural world. They would find, name, and organize every living thing on Earth.

Carl Linnaeus was just twenty-three when he first imagined his grand system. The son of a Swedish pastor, he had the confidence of someone who believed God had chosen him for this task. From his position at Uppsala University, he declared that nature contained exactly three kingdoms: animal, vegetable, and mineral. Everything that existed would fit into neat categories, like nested boxes. Seven levels of classification would be enough to organize all of creation. He even gave himself a grand title to match his ambition: Prince of Botanists.

In contrast, Georges-Louis Leclerc, later the Comte de Buffon, could not have been more different. Where Linnaeus craved fame and collected titles, Buffon worked quietly from his estate in Burgundy. Where Linnaeus saw fixed categories designed by God, Buffon saw nature as flowing and changing. He was wealthy enough to ignore fashion and powerful enough to ignore critics. As director of the Royal Garden in Paris, he commanded resources Linnaeus could only dream about. Yet he signed his letters simply “Buffon” and avoided the Academy meetings where men fought for reputation.

Their methods reflected their personalities. Linnaeus built his system of natural classification like a military campaign, sending students he called apostles to die in jungles and deserts around the world collecting specimens for him to examine. He measured skulls and counted flower petals, reducing nature to numbers and abstract labels. Buffon wrote gorgeous prose about animals as living beings with histories and habits. He studied how creatures behaved, what they ate, how they mated. Where Linnaeus wanted to name ten thousand species quickly, Buffon wanted to understand each one deeply.

Both men believed the world was small enough, and nature simple enough, to be cataloged completely. And both believed they would finish the job in their lifetimes. But the rivalry between them would prove that nature was far stranger, far richer, and far more dangerous to classify than either of them imagined.

The rivalry

By 1749, the race to discover, classify, and name every living thing on earth had become personal. Linnaeus published the tenth edition of his Systema Naturae, now swollen to over a thousand pages. Every creature in it received two Latin names, a genus and species, simple as a first and last name. His students fanned out across the globe, dying in remarkable numbers but sending back specimens from places Europeans had never imagined.

Meanwhile in Paris, Buffon launched his Histoire Naturelle, which would eventually fill forty-four volumes with half a million pages. Where Linnaeus gave nature a filing system, Buffon gave it a complex story and history. But the differences went far deeper than style.

The madness of the method

The systematic thinking that both men championed led them into some spectacular scientific dead ends. Take the straightforward case of dogs and wolves. Linnaeus classified them as entirely separate species, unable to see that every poodle and mastiff descended from wolves. He created three different species for what we now know as one African elephant. Young animals sent by his students were frequently categorized as distinct species from their own parents. The system that promised perfect order actually added more confusion.

Buffon’s observational, big-picture style produced just as many perplexing mistakes. He declared that big cats could not cross the equator, that lions existed only in the Old World. When confronted with evidence of jaguars in South America, he insisted they must be degenerate lions, weakened by the inferior climate. He believed the tropics were too hot for large animals to thrive, somehow overlooking elephants in India and hippos in Africa. His theory that environment shaped animals fused with his European prejudices to produce a toxic idea: every creature in the Western hemisphere was a lesser version of a superior European original.

The massive mistakes

The systems created to organize the natural world were soon used as models for organizing people. By the late 1800s, colonial administrators carried Linnaeus’s racial categories like field guides as they carved up parts of Africa and Asia. British officials in India created elaborate classifications of castes and tribes, declaring some naturally criminal, others naturally servile. French colonizers in Africa sorted peoples into those capable of civilization and those condemned to permanent inferiority. The language of natural science gave empire the vocabulary of control.

These ideas metastasized in ways that would have horrified even Linnaeus. German scientists in the 1930s built entire academic departments around racial classification, measuring skulls and noses with the same precision Linnaeus had counted flower petals. They created charts showing pure types and mixed types, superior varieties and inferior ones. The culmination of this thinking was genocide, justified by the scientific language of “species management” and “racial hygiene.” The categories originally designed for beetles and birds had become twisted into death sentences for millions.

The reckoning

When Linnaeus died in 1778, only a handful of mourners were there to see him laid to rest in Uppsala Cathedral. His household servants attended, as well as a few former University colleagues who remembered him from his younger days. Years of strokes had left him unable to recognize his own writings, forgotten even before death. Yet his system was already spreading across Europe like seeds on the wind.

When Buffon died ten years later, in 1788, forty thousand people followed his coffin’s slow procession through Paris. By the time of his death, he was arguably the most famous scientist in Europe, his Natural History outsold every book except the Bible in his time. Yet within just months, revolutionary chaos would erase him from living memory.

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What is Every Living Thing about?

Every Living Thing (2024) explores the bitter rivalry between Carl Linnaeus and Georges-Louis de Buffon to catalog every living thing, a competition that gave birth to modern biological science while also planting the seeds of scientific racism. It reveals how historical accidents and political forces ensured that the wrong man’s ideas triumphed, leaving us with Linnaeus’s rigid classification system even though Buffon was right about evolution, extinction, and the interconnected nature of life.

Every Living Thing Review

Every Living Thing (1992) by James Herriot showcases the heartwarming tales of a country veterinarian in rural England. Here's why this book is a gem:

Immerse yourself in the quirky, touching stories of animals and their owners, experiencing the ups and downs of rural life.
Discover the authenticity and warmth in the relationships between the vet and the community, portraying genuine connections and empathy.
With its humorous anecdotes and insightful reflections on nature, the book ensures you'll never find a dull moment in its pages.

Who should read Every Living Thing?

Science fans who enjoy discovering how scientific knowledge developed through human rivalry and error
History buffs who appreciate colorful characters and surprising connections to modern issues
Anyone curious about how political forces shape the scientific ideas that survive

About the Author

Jason Roberts won the 2025 Pulitzer Prize for Biography for Every Living Thing. His first book, A Sense of the World, chronicling the blind adventurer James Holman, became a national bestseller and National Book Critics Circle Award finalist. Based in Northern California, he regularly writes for publications like McSweeney’s and The Believer.

Categories with Every Living Thing

Health & Nutrition Education Science Nature & the Environment

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