19 h 7 minAudiobook13 minSummaryRead it, hear it, the 15-minute summary, and print and large print at cost
Audiobook edition · 19 h 7 minPaperback · 6 × 9 in · printing soonHardcover · 6 × 9 in · printing soonAbout this book
When war begins, must justice fall silent—or can even rulers and armies be bound by rules?
In The Rights of War and Peace, Hugo Grotius asks what can restrain power when nations fight. Against the backdrop of the Thirty Years War, he builds a case for rules that do not depend on one church or king. His starting point is human nature: people are made for life together, not merely for struggles over strength.
Grotius follows that idea into the hard questions of public life. When is war just? Who has the right to wage it? What do rulers owe their enemies? Drawing on Greek and Roman writers, the Bible, Roman law and the history of peoples, he examines property, promises, treaties and punishment. At stake is whether justice means more than whatever the powerful prefer.
What you’ll discover
- Law beyond sheer power Explore why Grotius grounds justice in human nature and the agreements nations make.
- The case for just war Follow his reasoning about when war is lawful and who may declare it.
- Promises that bind rulers See why keeping faith remains a basic duty, even for those who govern.
- Restraint toward the enemy Examine the difficult boundary between what war permits and how enemies should be treated.
- Punishment, mercy and peace Consider who may punish, on what grounds, and where mercy enters the argument.
Who will love it
This book suits readers drawn to law, ethics and political thought, and anyone curious where ideas like just war, sovereignty and treaties first took shape.
What’s inside
The key ideas, in the 15-minute summary
- War does not stand outside law
- Right begins with reason and society
- Defense can justify the use of force
- Authority and real injury must guide war
- Promises and punishment carry moral duties
- Uncertainty should turn rulers toward peace
- What goes unpunished may remain wrong
- Mercy and good faith build peace
- Judge the cause and the conduct
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The Rights of War and Peace
by Hugo Grotius · 1625
A jurist writing amid Europe's wars asks whether any war can be just, and what limits bind kings with no judge.
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In short
What makes a war just, and does any law bind kings who answer to no judge? Hugo Grotius asks these questions in The Rights of War and Peace, a treatise on international law and the law of war, often named as the starting point of that field.
The Rights of War and Peace at a glance
- Reading time
- About 10 h 10 min8 h 5 min fast, 12 h 5 min slow
- Length
- 145,100 words
- Library level
- Challenging long sentences, a rich vocabulary
- First published
- 1625by Hugo Grotius
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
Clear definitions and natural law come first
Grotius begins by asking what war is. He calls it the condition of parties in conflict, not a single act of force. This wide meaning takes in wars between states and single combats alike.
He leaves justice out of the definition on purpose. The whole question is whether any war is just, so the answer cannot be built into the word. Next he turns to right. An act is unjust when it clashes with the nature of society among rational creatures. He borrows Seneca's picture of the body, where every part works for the whole, to show why people should not harm one another.
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- 15-minute summary
- The key ideas of the whole book in about 13 minutes. A good first look, or a refresher.
Details
- First published
- 1625
- Language
- English
- Level
- Challenging
Cite this edition
Grotius, Hugo. The Rights of War and Peace. Library of Alexandria, 2026, libraryofalexandria.com/products/the-rights-of-war-and-peace.
Grotius, H. (2026). The rights of war and peace. Library of Alexandria. https://libraryofalexandria.com/products/the-rights-of-war-and-peace (Original work published 1625)
Grotius, Hugo. The Rights of War and Peace. Library of Alexandria, 2026. https://libraryofalexandria.com/products/the-rights-of-war-and-peace.
@book{grotius2026rights,
author = {Grotius, Hugo},
title = {The Rights of War and Peace},
publisher = {Library of Alexandria},
year = {2026},
url = {https://libraryofalexandria.com/products/the-rights-of-war-and-peace},
note = {First published 1625}
}
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What is The Rights of War and Peace about?
It asks whether war can ever be just and what rules bind states in war and peace. Grotius covers natural law, causes of war, promises, treaties, punishment, and the humane conduct of fighting.
Who was Hugo Grotius?
He was a Dutch jurist and scholar who died in 1645. He wrote the treatise during the Thirty Years War, drawing on law, scripture and ancient history to argue that nations owe one another duties.
What is the law of nations in this book?
It is the body of rules that rests on the consent of many nations, learned from custom and history. Grotius separates it from natural law, which rests on reason and applies to all.
The author
Hugo Grotius
1583–1645 · Dutch jurist and philosopher
Hugo Grotius (1583–1645) was a Dutch jurist and scholar born in Delft. He wrote The Rights of War and Peace, published in 1625. He lived in the Netherlands and later in France, where he served as Sweden’s ambassador. He died in Rostock, Germany, in 1645.
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