The thought and the sentence structure are Goethe’s, from the aphorism collection “Aus Makariens Archiv” that he appended to Wilhelm Meisters Wanderjahre in its expanded 1829 edition: “Es ist nicht genug, zu wissen, man muß auch anwenden; es ist nicht genug, zu wollen, man muß auch tun.” Wikiquote files the Leonardo credit under “Disputed,” noting no occurrence has been located earlier than Goethe. No one has located it in Leonardo’s notebooks, and the popular opener “I have been impressed with the urgency of doing” is not Goethe’s either — it rides along only on the da Vinci version. The German original is firmly Goethe’s and confirmed in the primary text; what stays open is who produced this particular English wording.
“Knowing is not enough; we must apply. Being willing is not enough; we must do” widely credited to Leonardo da Vinci, but the line is Goethe's: "Es ist nicht genug, zu wissen, man muß auch anwenden; es ist nicht genug, zu wollen, man muß auch tun." (Johann Wolfgang von Goethe, "Aus Makariens Archiv," Wilhelm Meisters Wanderjahre, 1829). Translator of the English wording unknown. Via Quotle.info
⚠ The slide-ready mistake: crediting this to Leonardo da Vinci. Use the credit shown above instead.
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? We couldn’t verify where this wording comes from, so there’s no rights status to give. Safe to present as an unverified or anonymous line — just don’t assert a specific author or source.
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In context
Evoking the world of Johann Wolfgang von Goethe — German poet, novelist & statesman. Theme: "Knowing is not enough; we must apply. Being willing is not enough; we must do". Atmospheric and restrained, cinematic directional light, a muted period-appropriate palette, fine grain and texture. Compose with generous empty space for the quote and a small credit line. No lettering in the image itself.
Minimalist
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Provenance
Where the line actually comes from
Work
Wilhelm Meisters Wanderjahre, oder die Entsagenden
Section
“Aus Makariens Archiv” — the closing aphorism collection, added in the expanded 1829 edition
First published
1829 (Cotta, Stuttgart & Tübingen) — the second edition, “differing substantially from the first” (1821). Carlyle records that Goethe had by then “taken to pieces” the original “and constructed anew,” with “multifarious intercalations, giving a great expansion, both of size and of scope.”
Translation
No identified translator for the wording in circulation. A public-domain English rendering of the same aphorism does exist — T. Bailey Saunders, The Maxims and Reflections of Goethe (Macmillan, 1906), no. 324 — but its wording is not the one people quote. Thomas Carlyle's standard 1827 English version omits this section entirely.
Wen jemand lobt, dem stellt er sich gleich. Es ist nicht genug, zu wissen, man muß auch anwenden; es ist nicht genug, zu wollen, man muß auch tun.
Goethe, 1829 — not Leonardo, and not 1500
Goethe's German, verbatim, with the aphorism that immediately precedes it — confirmed in Projekt Gutenberg-DE's text of Wilhelm Meisters Wanderjahre, Kapitel 71 ↗. Rendered literally: it is not enough to know, one must also apply; it is not enough to will, one must also do. Note that Goethe's second clause is “zu wollen” (to will) — the circulating English “Being willing is not enough” is a looser rendering, and the “urgency of doing” opener has no counterpart in the German at all.
The anchor.Wikiquote's Leonardo da Vinci page ↗ lists “Knowing is not enough; we must apply. Being willing is not enough; we must do.” under its Disputed heading, with the note: “No published occurrence of such an attribution has yet been located prior to one in Wilhelm Meisters Wanderjahre — Band 3 by Johann Wolfgang von Goethe,” followed by the German original.
Why there's no clean English pedigree. The section was added in the 1829 revision — and Wikipedia's article on the novel ↗ lists Thomas Carlyle's version as a translation of the first edition. Carlyle said so himself: in the “TO THE READER” notice to his translation at Project Gutenberg ↗ he writes that the original was later “taken to pieces by the author himself,” but that “it seemed unadvisable to meddle with it further at present.” The best-known public-domain English Wilhelm Meister therefore never contained this line. A public-domain English version of the aphorism does exist elsewhere — T. Bailey Saunders's The Maxims and Reflections of Goethe (Macmillan, 1906) ↗, where it stands as no. 324, the aphorisms having been folded into the Maximen und Reflexionen collection — but its wording is not the one in circulation either.
The misattribution, still running. The da Vinci version reaches genuinely prestigious platforms — a page from MIT's 16th president, Susan Hockfield ↗, is headed “The Urgency of Doing: MIT and the Spirit of Leonardo da Vinci” and prints “I have been impressed with the urgency of doing. Knowing is not enough; we must apply.” over Leonardo's name.
Two separate clocks here. Goethe's German is unambiguously public domain — published 1829, author died 1832. The rights that matter for the English sentence people actually quote attach to the translation, and that particular rendering has no identifiable translator or edition. This is not for want of a public-domain English text: T. Bailey Saunders's The Maxims and Reflections of Goethe (Macmillan, 1906) carries this exact aphorism as no. 324 — “It is not enough to know, we must also apply; it is not enough to will, we must also do” — and is free to reuse. It simply isn't the wording in circulation. Thomas Carlyle's 1827 Wilhelm Meister's Travels is the obvious candidate for the novel as a whole, not a route to this aphorism: Carlyle translated the 1821 first edition and expressly declined to revisit Goethe's later expansion, and the word “Makarie” appears nowhere in his text. Until the specific English rendering everyone quotes is tied to a datable edition, Quotle asserts no rights status for it. Reproduce the German or Saunders's 1906 version freely; treat the circulating English wording as unresolved.
Fact-check
Who gets the credit, and who earned it
This quote circulates under two names and in wordings that quietly differ from each other — and only one of them leads back to a real page in a real book.
✕
The whole line, usually with the “urgency of doing” openerLeonardo da Vinci Disputed
✓The idea and the sentence are Goethe's, written in German and published in 1829, three centuries after Leonardo da Vinci's death — a fact Wikiquote's Disputed section ↗ has recorded for years while the coffee mugs go on saying otherwise.
Context
Why it sticks to Leonardo
The line is a piece of late Goethe, and it sounds like it once you know: the elderly privy councillor at Weimar, who spent decades administering mines and roads and theatres, distilling a lifetime's impatience into two parallel clauses. Wissen is not enough — anwenden. Wollen is not enough — tun. It sits in “Aus Makariens Archiv,” a hoard of unattached aphorisms Goethe bolted onto the end of a novel in 1829, three years before he died.
So why Leonardo? Because the sentiment is a near-perfect fit for the myth. Leonardo is remembered as the man who knew everything and finished almost nothing — the notebooks full of helicopters that were never built, the commissions abandoned, the paint sliding off the wall of the Last Supper. A stern little maxim about the gap between knowing and doing reads, against that biography, like a confession. It is too good a fit to be true, and it isn't: the aphorism has no trace before 1829, three centuries after Leonardo's death.
Leonardo is remembered as the man who knew everything and finished almost nothing. That is exactly why the quote sticks to him — and exactly why it isn't his.
The tell: a sentence Goethe never wrote, bolted to the front
The da Vinci version almost always carries an opener the Goethe version never has: “I have been impressed with the urgency of doing.” That sentence corresponds to nothing in Goethe's German, which begins flatly at “Es ist nicht genug, zu wissen.” It is a useful diagnostic. When you see the “urgency of doing” preamble, you are looking at the branch of the tradition that has already detached from the source text — a first-person confession grafted on to make a free-floating maxim sound like a Renaissance man's diary.
The second tell is smaller. Goethe wrote zu wollen — to will, to intend. The Goethe-credited English usually keeps that (“Willing is not enough”); the Leonardo-credited English softens it to “Being willing is not enough.” The drift from willing to being willing is exactly the kind of erosion you get when a line is recopied from quote page to quote page rather than retranslated from a text.
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Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
Johann Wolfgang von Goethe (1749–1832) was the dominant figure of German letters — poet, novelist, dramatist, natural scientist, and privy councillor at the court of Weimar. He worked on the Wilhelm Meister novels for most of his adult life, and in old age reshaped the second one into a loose, essayistic book studded with standalone aphorisms. This line comes from that late, restless phase: Goethe the administrator and experimentalist, impatient with knowledge that never turns into work.
For writers & researchers
Cite this
Primary source
Johann Wolfgang von Goethe, “Aus Makariens Archiv,” in Wilhelm Meisters Wanderjahre, oder die Entsagenden, expanded ed. (Stuttgart & Tübingen: Cotta, 1829). German text confirmed at Projekt Gutenberg-DE, Wilhelm Meisters Wanderjahre, Kapitel 71. The English wording in circulation has no identified translator; the standard 19th-century English version by Thomas Carlyle does not contain this section.
This verification page
Quotle.info. “Who really said ‘Knowing is not enough; we must apply. Being willing is not enough; we must do’?” Last verified 14 Jul 2026. https://quotle.info/who-said/knowing-is-not-enough-we-must-apply-being-willing-is-not