Who really said it

Learning without thought is labour lost; thought without learning is perilous

Q: Did Confucius say "Learning without thought is labour lost; thought without learning is perilous"?

Yes. This is an authentic saying — the 'Analects' ('Lúnýǔ'), Book 2, verse 15: "學而不思則罔，思而不學則殆." The polished English — "Learning without thought is labour lost; thought without learning is perilous" — is James Legge's 1861 translation, not Confucius's own words, which were in Classical Chinese.

Written by Confucius 551–479 BC · Chinese philosopher & teacher · English wording by translator James Legge (1815–1897)

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This is an authentic saying — the ‘Analects’ (‘Lúnýǔ’), Book 2, verse 15: “學而不思則罔，思而不學則殆.” The polished English — “Learning without thought is labour lost; thought without learning is perilous” — is James Legge’s 1861 translation ↗, not Confucius’s own words, which were in Classical Chinese.

Last verified 10 Jul 2026 · how we verify · spot an error?

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“Learning without thought is labour lost; thought without learning is perilous” Confucius, Analects 2.15 (trans. James Legge, 1861)

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Provenance

The source

Work: The Analects (‘Lúnyǔ’), Book 2 (‘Wéi Zhèng’), verse 15
Original: 學而不思則罔，思而不學則殆
Translation: James Legge, ‘The Chinese Classics’, Vol. I (1861)
Composed: Sayings 6th–5th c. BC; compiled by disciples over the following centuries

Learning without thought is labour lost; thought without learning is perilous.

Legge’s 1861 English rendering of Analects 2.15. The bracing balance of the two clauses is partly Legge’s craft — other translators put it very differently.

Analects 2.15 with Legge translation and Chinese original (ctext.org)

How we verified this

The saying is Analects 2.15 ↗, with the Chinese “學而不思則罔，思而不學則殆” set beside Legge’s English.
The exact wording traces to James Legge’s translation of the Confucian Analects (1861) ↗, in his ‘Chinese Classics’ Vol. I.
Translation records show how much the English varies by hand — Ware (1950) has “Learning without thought ends in a blur,” per WIST’s catalogue of Analects 2.15 renderings ↗.

Public domain

The ancient Chinese text is long in the public domain, and James Legge’s English translation was first published in 1861 (‘The Chinese Classics’, Vol. I) — well before 1931 — so this specific wording is public domain in the United States. Note that a more recent translator’s wording of the same verse could still be in copyright.

This reflects the original work, which is public domain. If your exact English wording comes from a specific modern translation, that translation may itself still be under copyright — check the edition you quote.

Fact-check

What people get wrong

Unusually for a “Confucius said” line, this one is real. The catch is the English: the memorable phrasing belongs to a Victorian translator, and it circulates in a swarm of conflicting wordings.

Confucius — but not in these English words wording

Confucius spoke Classical Chinese; the elegant “labour lost … perilous” balance is Legge’s 1861 English ↗. Quoting it as Confucius’s literal words skips the translator.

Countless paraphrases passed off as ‘the’ quote variant

The same verse appears as “Learning without thinking is useless; thinking without learning is dangerous” and other forms — WIST lists renderings from Jennings, Ku Hung-Ming, Waley, Lau and more ↗. No single English version is ‘the’ original.

The thought is genuinely Confucius’s — Analects 2.15 ↗ — but this exact English sentence is James Legge’s 1861 translation.

Context

Why it matters

Analects 2.15 is one of Confucius’s most quoted lines because it refuses a false choice: it faults empty book-learning (‘learning without thought’) and untethered speculation (‘thought without learning’) in the same breath, insisting the two must work together.

Its fame in English owes much to James Legge, the Scottish missionary-sinologist whose 19th-century translations made the Confucian classics accessible to Western readers — and whose crisp phrasing is what most people are actually quoting.

Learning and thinking are faulted in the same breath — each barren without the other.

Explore

Filed under

More provenance-checked quotes on the same theme, each with its reuse status.

Knowledge Wisdom

Go further

Dig deeper

Trusted places to keep pulling the thread — primary archives, fact-checks, and scholarship. We show how we used each one before you leave.

Analects 2.15 — Chinese text with Legge translationctext.org

Chinese Text Project: the original 學而不思則罔… beside Legge's English.

The Chinese Classics, Vol. I: Confucian Analects (Legge, 1861)gutenberg.org

Full public-domain text of Legge's translation, the source of this wording.

Confucian Analects (Legge) on Wikisourceen.wikisource.org

Transcribed Legge translation with book/verse structure.

Analects 2.15 — catalogue of translation variantswist.info

Side-by-side renderings by Ware, Jennings, Ku Hung-Ming, Waley, Lau and others.

James Leggeen.wikipedia.org

Biography of the translator whose 1861 wording this quote reproduces.

The Analects (Wikipedia)en.wikipedia.org

Background on the text, its compilation, and its transmission.

The author

About Confucius

Confucius

551–479 BC · Chinese philosopher, teacher & founder of the Confucian tradition

Confucius (‘Kǒngzǐ’, Master Kong) was a philosopher and teacher of the Spring and Autumn period whose ideas on ethics, learning and social harmony shaped East Asian thought for millennia. He wrote no treatise himself; his teachings survive chiefly in the Analects, a collection of his sayings and dialogues compiled by disciples after his death. This aphorism pairs rote learning and untethered thought, arguing each is barren without the other.

For writers & researchers

Cite this

Primary source — Chicago

Confucius. The Chinese Classics, Vol. I: Confucian Analects, the Great Learning, and the Doctrine of the Mean. Translated by James Legge. Hong Kong: Legge; London: Trübner, 1861. Book 2 (Wei Zheng), verse 15.

MLA (9th ed.)

Confucius. The Chinese Classics, Vol. I: Confucian Analects, the Great Learning, and the Doctrine of the Mean. Translated by James Legge, Trübner, 1861, bk. 2, verse 15.

APA (7th ed.)

Confucius. (1861). The Chinese classics, Vol. I: Confucian Analects, the Great Learning, and the Doctrine of the Mean (J. Legge, Trans.). Trübner.

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