The joke is genuinely Twain’s — he told it on the record at least three times. The number is not. Quote Investigator found no evidence the “three weeks” wording is authentic ↗, and it is missing from the Yale Book of Quotations, the Oxford Dictionary of Quotations and The Quote Verifier. In print, Twain asked for “several hours” (Chicago, 1879), “four days” (as General Sherman told it in 1887), and “about a week ahead” (London, 1899).
“Three Weeks to Prepare a Good Impromptu Speech” Apocryphal — no Mark Twain source has been identified for "It usually takes me more than three weeks to prepare a good impromptu speech." Twain's documented versions run to "several hours" (Chicago, 1879), "four days" (as Gen. Sherman told it, 1887) and "about a week ahead" (London, 1899). See Quote Investigator, "Three Weeks to Prepare a Good Impromptu Speech," 9 June 2010. · Verbatim: “But I never was happy, never could make a good impromptu speech without several hours to prepare it.”
Can you use it?
? We couldn’t establish where this was first published, so there’s no rights status to give. Credit it as shown above — just don’t present it as public domain, and get permission for commercial or published reuse.
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In context
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Provenance
What Twain actually said
Popular wording
“It usually takes me more than three weeks to prepare a good impromptu speech.”
Twain source
None located — absent from Yale, Oxford, The Quote Verifier and Wikiquote
What he did say
The Grant Reception Monograph
Oldest printing seen
The Bullet (Fredericksburg, VA), 24 November 1953, p. 6
I have not listened to a bad speech to-night, and I don’t propose to be the one to furnish you with one; and I would, if I had time and permission, go on and make an excellent speech. But I never was happy, never could make a good impromptu speech without several hours to prepare it.
Mark Twain at the Society of the Army of the Tennessee reception in Chicago, printed the same year in The Grant Reception Monograph (1879), p. 41. Quote Investigator dates the occasion 12 November 1879 ↗ from the Society’s own published proceedings. Note what is not in it: any mention of three weeks.
1879 — the real joke, in print the same year. Speaking at the Society of the Army of the Tennessee reception in Chicago, Twain said he “never could make a good impromptu speech without several hours to prepare it.” It is set down on p. 41 of The Grant Reception Monograph (Chicago: L. E. Adams, 1879) ↗.
1887 — four days. Introducing Twain at an Augustin Daly dinner, General Sherman described him as a man “who had once told him that he could not make an impromptu speech unless he had four days for preparation” — Joseph Francis Daly, The Life of Augustin Daly (1917), p. 432 ↗.
1899 — about a week. At the Whitefriars Club dinner in London he explained the method outright: “I used to begin about a week ahead, and write out my impromptu speech and get it by heart.” The address is in Mark Twain’s Speeches (Harper & Brothers, 1910) ↗, where it is dated 20 June 1899; Quote Investigator notes that Mark Twain Speaking dates the same speech 16 June.
1953 — the three-weeks version surfaces. The oldest printing of the inflated wording I could locate is a filler-quotes column in a student newspaper: “It usually takes me three weeks to prepare a good impromptu speech. — Mark Twain,” in The Bullet (University of Mary Washington), 24 November 1953, p. 6 ↗ — long after Twain’s death in 1910. That is a floor on the wording’s age, not a claim to its origin.
No rights status can honestly be asserted for the “three weeks” sentence, because no one has identified the work, speech or letter it came from. The authenticated Twain remarks quoted on this page are a different matter: they were published in 1879, 1910 and 1917, all well before 1931, and are in the public domain in the United States.
Rights status is our research, not legal advice — and copyright varies by country and edition. For commercial or published use, confirm with the rightsholder. See terms.
Fact-check
How the number grew
This is not a case of a stranger’s line pinned on a famous name. Twain really did joke that his impromptu speeches took days of work. What no source supports is the specific figure of three weeks.
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The wordingMark Twain Apocryphal
Quote Investigator reports finding no evidence the quotation is authentic ↗, and notes that a search for “impromptu” turns up nothing in the Twain sections of the Yale Book of Quotations, The Quote Verifier or the Oxford Dictionary of Quotations. It does appear, QI records, in the Encarta Book of Quotations (2000) and across internet quotation databases.
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The number“Three weeks” Inflation
Every documented Twain version is shorter, and none is a fortnight or more: several hours in 1879 ↗, four days as Sherman told it in 1887 ↗, about a week in 1899 ↗.
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WikiquoteAbsent entirely Not listed
The word “impromptu” does not appear anywhere in Wikiquote’s Mark Twain article ↗ — not in the sourced quotations, and not among the disputed or misattributed lines either.
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The wider jokeWoodrow Wilson, and others Related family
The same gag runs under other names. Quote Investigator quotes a 1918 anecdote in which Wilson says a ten-minute speech takes him two weeks, a half-hour speech a week, and an unrestricted one no preparation at all; QI treats this family of speech-preparation sayings ↗ as an evolving one that has also been hung on Lincoln, Rufus Choate and Twain.
✓Twain genuinely made this joke — and the versions anyone can actually document ↗ run to several hours, four days, or about a week. Three weeks is somebody else’s embellishment.
Context
Why this one is worth getting right
The three-weeks line is a favourite epigraph in public-speaking books, and its appeal is the paradox: an impromptu speech that takes three weeks. Twain built exactly that paradox himself, and he was funnier about it than the abridged version, because he explained the mechanics — writing the “impromptu” out, learning it by heart, marking the pauses and hesitations in the margin, and handing the reporters a clean copy in advance.
The drift is instructive. What survives in circulation is the punchline stripped of the method, with the interval rounded up for effect. The genuine remarks are easy to find and fully attested; the polished version, which is the one everybody repeats, has no home in Twain’s work at all.
The joke is his. The number is not.
Read the full story
Twain’s Whitefriars account is the fullest statement of the bit: “in order to do an impromptu speech as it should be done you have to indicate the places for pauses and hesitations. I put them all in it. And then you want the applause in the right places.”
For the record, Quote Investigator notes that some sites have quoted Twain accurately on this subject, and singles out Toastmasters International and Erica Stull for doing so.
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Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
1835–1910 · American humorist, novelist & lecturer
Samuel Langhorne Clemens (30 November 1835 – 21 April 1910) wrote as Mark Twain, and by the 1870s he was as famous for his platform manner as for The Adventures of Tom Sawyer and Adventures of Huckleberry Finn. He worked the after-dinner circuit hard, and one of his running bits was to confess that his effortless off-the-cuff remarks were nothing of the kind. That confession is real and repeatedly documented — which is exactly why a punchier, unsourced version of it has been circulating under his name for at least seventy years.
For writers & researchers
Cite this
Earliest documented Twain remark
Mark Twain, remarks at the Society of the Army of the Tennessee reception, Chicago, in The Grant Reception Monograph (Chicago: L. E. Adams, 1879), 41. The popular "three weeks" wording has no identified Twain source; see "Quote Origin: Three Weeks to Prepare a Good Impromptu Speech," Quote Investigator, June 9, 2010.
This verification page
Quotle.info. “Who really said ‘Three Weeks to Prepare a Good Impromptu Speech’?” Last verified 1 Sep 2026. https://quotle.info/who-said/three-weeks-to-prepare-a-good-impromptu-speech/