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Who really said it

Quality comes not from inspection, but from improvement of the production process

Written by W. Edwards Deming 1900–1993 · American statistician · architect of postwar quality management
Verified In copyright

The sentence is Deming’s own, from Out of the Crisis — Wikiquote’s sourced section places it at page 29, with no Point number attached to the entry. It is his own prose rather than one of the numbered 14 Points, which the W. Edwards Deming Institute cites to pages 23–24; the Institute independently cites that same page 29 for the neighbouring line “Inspection is too late. The quality, good or bad, is already in the product.”

Last verified 17 Aug 2026 · how we verify · spot an error?

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Verified quote & credit

“Quality comes not from inspection, but from improvement of the production process” W. Edwards Deming, Out of the Crisis (MIT Center for Advanced Engineering Study, 1986), p. 29. First published 1982 as Quality, Productivity, and Competitive Position.

Can you use it?

Still under copyright (rights held by W. Edwards Deming’s estate / The W. Edwards Deming Institute; MIT Press (current publisher)). 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

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Provenance

Out of the Crisis, page 29

Work
Out of the Crisis
Published
MIT Center for Advanced Engineering Study, 1986 — first issued 1982 as Quality, Productivity, and Competitive Position
Location
Page 29 — Deming’s own prose, past the condensed 14 Points at pages 23–24; no source ties the page to a numbered Point
Author
W. Edwards Deming (1900–1993)

Quality comes not from inspection, but from improvement of the production process. Out of the Crisis, p. 29

We show the sentence alone rather than stitching a longer passage together: the book is in copyright, and the surrounding sentences are quoted with slightly different page cites by different compilers. What is firmly established for page 29 is this line (per Wikiquote ↗) and, on the same page, “Inspection does not improve the quality, nor guarantee quality. Inspection is too late. The quality, good or bad, is already in the product” (per the Deming Institute ↗).

Book scan
Borrow the 1986 MIT CAES edition at the Internet Archive
W. Edwards Deming on Wikiquote — sourced quotations

How we know

  • Quote Investigator has no article on this line, so the anchor is Wikiquote’s sourced section ↗, which lists the exact wording under Out of the Crisis with the cite “p. 29.”
  • A second, independent Deming quotation wiki gives the same book and page — Motley Bytes ↗ cites “Out Of The Crisis. The MIT Press. (2e ed. 1986) p. 29.”
  • The W. Edwards Deming Institute ↗ independently cites page 29 for the adjacent inspection passage — corroborating the page number, though the Institute does not tie that page to a numbered Point. It separately places the numbered points themselves, Point 3 included, at pages 23–24 ↗.
  • The book is real and datable: Open Library’s record ↗ gives MIT Center for Advanced Engineering Study, 1986, 507 pages, ISBN 0-911379-01-0, with an original date of 1982; Wikipedia ↗ notes the 1982 Quality, Productivity, and Competitive Position was renamed Out of the Crisis in 1986.
In copyright

Out of the Crisis was published by MIT’s Center for Advanced Engineering Study in 1986, having first appeared in 1982 as Quality, Productivity, and Competitive Position (catalog record ↗). Both dates fall well after the 1931 United States public-domain cutoff, so the text is firmly in copyright — we quote a single sentence under fair use and link to a lawful borrowable scan rather than reproducing the passage.

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

What gets garbled

The attribution here is sound — this really is Deming. What travels badly is the wording, and what part of his book it comes from.

“…but from the improvement of the production process” variant

An extra definite article is widely inserted; Goodreads carries this form ↗, while Wikiquote’s sourced text ↗ has plain “from improvement.”

“Quality does not come from inspection, but from improvement of the process” paraphrase

A compressed restatement that circulates in management summaries of the 14 Points — for example in this fourteen-points library entry ↗, which gives no page or edition.

Quoted as if it were Point 3 not the point itself

Point 3 as published reads “Cease dependence on inspection to achieve quality. Eliminate the need for inspection on a mass basis by building quality into the product in the first place” — cited by the Deming Institute to pages 23–24 ↗. Our sentence is Deming’s explanatory prose further on.

Deming coined “You cannot inspect quality into a product” Dodge’s line

The sibling slogan is routinely credited to Deming, but Deming credited it to the Bell Labs statistician Harold F. Dodge — quoting his own text saying so ↗.

The sentence itself is Deming’s, written in his own book: Out of the Crisis, page 29, per Wikiquote’s sourced section ↗ and corroborated by the Deming Institute’s citation of that same page ↗.

Context

Why the line matters

Before Deming, quality control in most Western factories meant sorting: build the batch, then inspect it and pull out the bad ones. Deming’s argument was that this is arithmetic, not improvement — the defects have already been paid for by the time an inspector finds them. The sentence on page 29 is the hinge of Point 3 of the 14 Points ↗: stop depending on inspection, and build quality in instead.

Deming had made the case in Japan decades earlier. He spent June to August 1950 training Japanese engineers, managers and scholars in statistical process control, and in December of that year the Union of Japanese Scientists and Engineers established the Deming Prize ↗ — funded because he had refused royalties on his lecture transcripts.

Inspection is too late. The quality, good or bad, is already in the product.

How Point 3 actually reads — and what Deming credited to someone else

The famous sentence is Deming’s prose gloss, not the numbered point. Point 3 as published reads: “Cease dependence on inspection to achieve quality. Eliminate the need for inspection on a mass basis by building quality into the product in the first place,” which the Deming Institute cites to pages 23–24 ↗.

The pull-quote above is also Deming, from the same page 29 — the Institute quotes it as “Inspection does not improve the quality, nor guarantee quality. Inspection is too late. The quality, good or bad, is already in the product.” See the Institute’s entry ↗.

The adjacent slogan “You cannot inspect quality into a product” is not Deming’s coinage — he credited it to the Bell Labs statistician Harold F. Dodge, as Michael Bolton documents ↗.

Explore

Filed under

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

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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.

W. Edwards Deming — sourced quotationsen.wikiquote.org

The sourced entry that pins this exact wording to Out of the Crisis, page 29.
"Inspection is too late" — Deming Institutedeming.org

The Institute quoting the neighbouring page-29 passage, with the page cite.
Dr. Deming's 14 Points for Managementdeming.org

Point 3 as actually published, cited to pages 23–24 — showing our line is prose, not the point.
Out of the Crisis (1986 MIT CAES edition)archive.org

Borrowable scan of the book itself, published by MIT's Center for Advanced Engineering Study.
Out of the Crisis — catalog recordopenlibrary.org

Bibliographic record: MIT CAES, 1986, ISBN 0-911379-01-0, original 1982.
You Can't Inspect Quality Into a Productdevelopsense.com

Traces the sibling slogan to Harold F. Dodge, whom Deming himself credited.

The man behind the 14 Points

Who was W. Edwards Deming?

W. Edwards Deming

1900–1993 · American statistician and management consultant

Deming was an American statistician who spent June to August 1950 training Japanese engineers, managers and scholars in statistical process control — work so consequential that the Union of Japanese Scientists and Engineers established the Deming Prize in December 1950, funded because Deming had declined royalties on the transcripts of his lectures. He was largely unknown to American management until the 1980s, when his 14 Points for Management reframed quality as a property of the system rather than of the finished item. This line is the compressed statement of that whole argument.

For writers & researchers

Cite this

Out of the Crisis, p. 29

W. Edwards Deming, Out of the Crisis (Cambridge, MA: Massachusetts Institute of Technology, Center for Advanced Engineering Study, 1986), 29. First published 1982 as Quality, Productivity, and Competitive Position.

This verification page

Quotle.info. “Who really said ‘Quality comes not from inspection, but from improvement of the production process’?” Last verified 17 Aug 2026. https://quotle.info/who-said/quality-comes-not-from-inspection-but-from-improvement-of/

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