9 h 56 minAudiobook13 minSummaryRead it, hear it, the 15-minute summary, and print and large print at cost
Audiobook edition · 9 h 56 minPaperback · 6 × 9 in · printing soonHardcover · 6 × 9 in · printing soonAbout this book
What if freedom comes not from choosing without limits, but from understanding what moves you?
In Ethics, Benedictus de Spinoza builds a view of reality, the human mind and the good life with definitions, axioms and proofs. His method resembles geometry, but his questions reach into daily experience. Why do fear, love and anger hold us so strongly? How can clear thought lead us out of confusion and sadness?
Spinoza argues that God and Nature are one, that everything follows by necessity, and that mind and body are one thing seen two ways. He denies free will, yet makes human freedom his goal. The challenge is to understand how reason can guide a person whom passions pull toward choices they know are worse.
What you’ll discover
- A geometry of living Follow definitions and proofs toward questions about your emotions, understanding and the good life.
- God and Nature united Explore Spinoza's claim that all things belong to one substance, rather than separate realities.
- Mind and body together Consider what changes when thought and body become two ways of seeing one thing.
- The pull of passions Examine why emotions bind us, and how reason offers a different way to live.
- Freedom through understanding Discover why Spinoza links lasting joy to clear understanding rather than choice without causes.
Who will love it
For readers who like big questions about God, nature, the mind and freedom, and who enjoy following an argument step by step. It suits anyone curious about how feelings work.
What’s inside
The key ideas, in the 15-minute summary
- Everything is one infinite substance
- Everything follows by strict necessity
- Nature has no goals, only human purposes
- Mind and body are one thing seen two ways
- Knowledge comes in three kinds, and error is a lack
- We feel free only because we miss our causes
- Emotions follow nature's laws and can be studied
- Only a stronger feeling beats a feeling
- Reason joins people, and love beats hatred
- Understanding frees the mind
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Ethik
by Benedictus de Spinoza · 1677
A philosopher builds an entire view of God, mind and feeling from definitions, in the manner of a geometry book.
Medium level5–10 hours to readDeutsch
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In short
Can a book prove how to live, the way a geometer proves something about triangles? Benedictus de Spinoza believed it could.
From the 15-minute summary · Key idea 1
Everything is one infinite substance
Spinoza begins with definitions. A substance exists in itself and is understood through itself. A mode is a way a substance is, and it needs something else to exist. From these two terms he builds the rest of the book.
He argues that two substances cannot share the same nature, since nothing could tell them apart. One substance cannot cause another, since things with nothing in common cannot explain each other. So a substance must be its own cause, and it must be infinite, because a limit would need a second substance to set it.
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Which edition is right for me
- 15-minute summary
- The key ideas of the whole book in about 13 minutes. A good first look, or a refresher.
Details
- First published
- 1677
- Language
- Deutsch
- Reading time
- 6 h 25 min
- Level
- Medium level
Cite this edition
Spinoza, Benedictus de. Ethics. Library of Alexandria, 2026, libraryofalexandria.com/products/ethics.
Spinoza, B. de. (2026). Ethics. Library of Alexandria. https://libraryofalexandria.com/products/ethics (Original work published 1677)
Spinoza, Benedictus de. Ethics. Library of Alexandria, 2026. https://libraryofalexandria.com/products/ethics.
@book{spinoza2026ethics,
author = {Spinoza, Benedictus de},
title = {Ethics},
publisher = {Library of Alexandria},
year = {2026},
url = {https://libraryofalexandria.com/products/ethics},
note = {First published 1677}
}
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What is Spinoza's Ethics about?
It argues that God and Nature are one infinite substance, that the mind and body are two sides of one thing, and that understanding our emotions leads to freedom, lasting joy and a good life shared with others.
Why is the Ethics written like geometry?
Spinoza wanted human feelings and conduct studied as carefully as lines and planes. So he gives definitions, axioms, propositions and proofs, adding notes where he explains his meaning in plain language and answers objections.
What does Spinoza mean by God or Nature?
He means the one infinite reality of which everything is a part. It is not a person who makes choices. All things follow from its nature by necessity, as the angles of a triangle follow from what a triangle is.
The author
Benedictus de Spinoza
1632–1677 · Dutch philosopher
Benedictus de Spinoza was a Dutch philosopher of the seventeenth century whose Ethics, published after his death, builds a complete vision of God, nature, and human freedom through geometric demonstration. He stands among the great rationalists of Western thought.
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