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About this book

What makes us accept a ruler’s power—and what happens when no one can keep the peace?

In Leviathan, Thomas Hobbes builds his account of political power from the human body outward. Senses, appetites and fear lead him toward a stark question: how can people live together without turning against one another? His argument moves from what drives us to why we agree to be ruled.

Hobbes asks you to imagine life without a common power, where roughly equal people face a war of everyone against everyone. Against this danger, he sets the social contract and a sovereign with undivided power. Religion, protection and obedience all enter his account of what holds a commonwealth together.

What you’ll discover

  • The body before politics Follow Hobbes from senses and appetites to the desires that shape our lives together.
  • Life without a ruler Enter a thought experiment where human equality brings conflict rather than lasting peace.
  • A covenant for peace Explore why Hobbes makes mutual agreement the foundation of a common power.
  • The case for sovereignty Confront his argument that keeping the peace demands strong and undivided authority.
  • Religion within the commonwealth Examine how Hobbes draws on the Bible in his argument about religion and rule.

Who will love it

This book is for readers who love big arguments about power, law and human nature, and for anyone curious where modern ideas of the state, the social contract and obedience come from.

What’s inside

The key ideas, in the 15-minute summary

  1. Security begins with a common authority
  2. The mind begins with the senses
  3. Clear definitions make reasoning possible
  4. Without government, distrust becomes war
  5. Promises need power behind them
  6. People authorize one sovereign will
  7. Liberty remains where law is silent
  8. Religious authority must not divide sovereignty
  9. Follow causes and ask who benefits

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Philosophy & Ideas

Leviathan by Thomas Hobbes

by Thomas Hobbes · 1651

Hobbes pictures a world with no government, then asks what you would give up to escape it.

Challenging10–20 hours to readEnglish

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In short

Picture a world with no police, no courts and no government at all. Every neighbor is a possible threat, so you lock your doors, arm yourself on the road and sleep badly.

Leviathan by Thomas Hobbes by Thomas Hobbes, the cover

Leviathan by Thomas Hobbes at a glance

Reading time
About 13 h 45 min10 h 55 min fast, 16 h 20 min slow
Length
196,000 words
Library level
Challenging long sentences, a rich vocabulary
First published
1651by Thomas Hobbes

Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated

From the 15-minute summary · Key idea 1

Your mind is nothing but matter in motion

Hobbes begins with a plain claim. Everything in the mind comes from the senses, and the senses are motion. An object presses on the eye or the ear, the pressure travels inward, and the heart pushes back. That push outward is what we call seeing or hearing.

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15-minute summary
The key ideas of the whole book in about 14 minutes. A good first look, or a refresher.
Details
First published
1651
Language
English
Level
Challenging

Cite this edition

Hobbes, Thomas. Leviathan by Thomas Hobbes. Library of Alexandria, 2026, libraryofalexandria.com/products/leviathan-by-thomas-hobbes.

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What is Leviathan by Thomas Hobbes about?

Leviathan argues that people need a strong sovereign to escape a state of constant fear and war. Hobbes builds this from his account of the mind, language, passions and law, then applies it to religion and the Church.

What does the Leviathan stand for?

The Leviathan is the commonwealth, which Hobbes pictures as a human-made figure larger than any real person. Its sovereign is its soul, its laws are its reason, and its peace is its health. The name comes from a sea monster in the Bible.

What is the state of nature in Leviathan?

Hobbes uses it for the commonwealth that provides peace and defense. In that condition people fear each other, may attack first for safety, and cannot build industry or society. He calls it a war of everyone against everyone.

The author

Thomas Hobbes

1588–1679 · English philosopher

Thomas Hobbes was an English philosopher born in Westport, near Malmesbury, in 1588. He lived in England and spent several years in Paris. He wrote Leviathan, published in 1651, and other works on philosophy, politics, and geometry. He died at Hardwick Hall in Derbyshire in 1679.

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