Grace Hopper really did press this idea — the earliest strong match is a 1976 Computerworld interview where she called “We’ve always done it that way” the most dangerous phrase a data-processing manager can use. But the tidy popular version (“the most dangerous phrase in the language … this way”) is a later smoothing, not wording pinned to any single primary source.
“The most dangerous phrase in the language is, we've always done it this way” Attributed to Grace Hopper. Her documented 1976 wording (Computerworld) was "the most dangerous phrase a DP manager can use is 'We've always done it that way.'" — the popular version is a later paraphrase.
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In context
Evoking the world of Grace Hopper — U.S. Navy Rear Admiral & computer-science pioneer. Theme: "The most dangerous phrase in the language is, we've always done it this way". 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
Minimalist editorial slide for the quote "The most dangerous phrase in the language is, we've always done it this way". Clean background, a single muted accent color, generous negative space, subtle paper or linen texture, no literal illustration — let the words carry it. Reserve clear space for a serif quote and a small credit line. No lettering in the image itself.
Provenance
The source
Speaker
Grace Murray Hopper
Earliest strong match
Computerworld, 26 Jan 1976, p. 9
Documented wording
“the most dangerous phrase a DP manager can use is ‘We’ve always done it that way.’”
Precursor
The Baltimore Sun, 26 Sep 1975, p. B8
“… the most dangerous phrase a DP manager can use is ‘We’ve always done it that way.’”
Documented 1976; popular wording is a paraphrase
Grace Hopper’s documented wording, per the earliest strong citation. The widely shared form — “The most dangerous phrase in the language is, we’ve always done it this way” — is a polished later variant.
Quote Investigator traces the earliest strong match to a 1976 Computerworld interview and notes Hopper voiced the idea more than once with shifting wording (“dangerous,” later “damaging”) — read the investigation.
A 1975 Baltimore Sun profile shows Hopper already using the theme without the word “dangerous,” warning how hard it is to change minds that say “But we’ve always done it this way” — per QI’s chronology.
Wikiquote lists the polished form in its Disputed section, pointing to Quote Investigator rather than to any primary Hopper source for the exact wording.
The earliest documented source of this idea is Grace Hopper’s 1976 Computerworld interview — first published well after 1931, so it is in copyright. The popular one-line wording is a later paraphrase not tied to a single identifiable publication, so no public-domain claim can be made for it.
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
Genuine idea, polished wording
This is not a fabrication pinned on a famous name — Grace Hopper really did make this point, repeatedly. What circulates online is a cleaned-up version of her documented words.
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Exact wordingGrace Hopper paraphrase
Her earliest strong documented line was “the most dangerous phrase a DP manager can use is ‘We’ve always done it that way’” (Computerworld, 1976). The popular “in the language … this way” form drops the data-processing context and smooths the phrasing — per Quote Investigator.
✕
Wording driftGrace Hopper
Hopper voiced the notion more than once with different words — a 1987 citation uses “damaging” rather than “dangerous,” showing there is no single fixed original sentence to quote, as QI documents.
✓The credit to Grace Hopper is sound; the exact popular sentence is a later paraphrase of her documented 1976 remark, not a verbatim quotation.
Context
Why it mattered
Grace Hopper spent decades urging engineers and managers to stop deferring to habit, so a line about the danger of “we’ve always done it this way” fits her thinking exactly. The question is only whether the crisp sentence people share is her literal wording — and the record shows it is a tidied version rather than a verbatim quote.
The idea is authentically Hopper’s; the polished sentence is the internet’s.
Explore
Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
1906–1992 · U.S. Navy Rear Admiral & computer-science pioneer
Grace Murray Hopper was an American mathematician and U.S. Navy officer who helped build the earliest computers and championed machine-independent programming, work that led to COBOL. A relentless advocate for questioning inherited habits, she gave countless talks warning organizations against complacency — making this line squarely consistent with her documented views.
For writers & researchers
Cite this
Primary source — Chicago
Grace Murray Hopper, interview, Computerworld (26 January 1976), p. 9, as documented in Garson O’Toole (Quote Investigator), “Quote Origin: The Most Dangerous Phrase Is: ‘We’ve Always Done It That Way,’” 27 November 2014.
MLA (9th ed.)
Hopper, Grace Murray. Interview. Computerworld, 26 Jan. 1976, p. 9.
APA (7th ed.)
Hopper, G. M. (1976, January 26). [Interview]. Computerworld, 9.
This verification page
Quotle.info. “Who really said ‘The most dangerous phrase in the language is, we've always done it this way’?” Last verified 16 Jul 2026. https://quotle.info/who-said/the-most-dangerous-phrase-in-the-language-is-weve-always/