Who really said it

The most dangerous phrase in the language is, we've always done it this way

Q: Did Grace Hopper say "The most dangerous phrase in the language is, we've always done it this way"?

Not confirmed. 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.

Attributed to Grace Hopper 1906–1992 · U.S. Navy Rear Admiral & pioneering computer scientist

Attributed In copyright

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.

Last verified 16 Jul 2026 · how we verify · spot an error?

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Unconfirmed quote & credit

“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.

Can you use it?

Still under copyright (rights held by Computerworld / IDG (1976 interview); Grace Hopper estate). A short, credited quote is generally fine for talks, teaching, and internal decks; for commercial, published, or large-scale reuse, get permission.

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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: tracing “We’ve always done it that way”

How we verified this

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.

In copyright

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.

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.

Grace 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.

Grace 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.

Change 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.

Quote Investigator — full chronologyquoteinvestigator.com

Traces the quote from a 1922 precursor through Hopper’s 1975 and 1976 citations; names the 1976 Computerworld interview as the earliest strong match.

Grace Hopper — Wikiquoteen.wikiquote.org

Lists the polished popular wording under its Disputed section, citing Quote Investigator rather than a primary source.

Grace Hopper — Wikipediaen.wikipedia.org

Biography of the mathematician and Navy rear admiral, establishing the life dates and career context for the attribution.

Computerworld — Wikipediaen.wikipedia.org

Background on the IDG trade weekly that published the 1976 interview containing the earliest documented form of the line.

The author

About Grace Hopper

Grace Hopper

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