Straight from today’s Quotle — here’s who really said it, and the story behind it. Play again

Who really said it

Intelligence is the ability to adapt to change

Not Stephen Hawking — an unsourced modern paraphrase Unknown; descended from Leon C. Megginson’s 1963 Darwin paraphrase Exact wording has no documented primary source
Disputed Rights unconfirmed

There is no record of Stephen Hawking writing or saying this line — it appears in none of his books, papers, or documented interviews, and Wikiquote lists no sourced instance of it. The sentence is a compressed, anonymised echo of a much older meme: Quote Investigator traces the “survives by adapting to change” idea to management professor Leon C. Megginson, who in 1963 paraphrased Darwin. Tellingly, Megginson set intelligence against adaptability rather than equating them — so the tidy “intelligence is the ability to adapt” wording matches neither Hawking nor Megginson. It was simply pinned on Hawking’s famous name.

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

For presentations

Put it on a slide

Disputed — copy with the correction

“Intelligence is the ability to adapt to change” widely attributed to Stephen Hawking, but unsourced; a modern paraphrase descended from Leon C. Megginson's 1963 restatement of Darwin.

Can you use it?

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.

Image direction — grounded in this quote’s real context; paste into your image tool

In context

Evoking the world of Leon C. Megginson — American management professor, Louisiana State University. Theme: "Intelligence is the ability to adapt to change". 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 "Intelligence is the ability to adapt to change". 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

Where the line actually comes from

Popularly credited to
Stephen Hawking (1942–2018)
Verdict
No documented source — an unsourced modern paraphrase
Closest ancestor
“Lessons from Europe for American Business” (1963)
Author of ancestor
Leon C. Megginson, paraphrasing Darwin

According to Darwin’s Origin of Species, it is not the most intellectual of the species that survives; it is not the strongest that survives; but the species that survives is the one that is able best to adapt and adjust to the changing environment in which it finds itself. the 1963 ancestor, not a Hawking quote

Leon C. Megginson, 1963 — the documented ancestor of the whole “adapt to change” quote family. Note that it contrasts intelligence with adaptability; the “intelligence is the ability to adapt” line credited to Hawking is a later, unsourced compression that no primary source supports.

Quote Investigator: origin of the “most adaptable survives” quote

How we traced it

The exact wording “Intelligence is the ability to adapt to change” has no identified author or first publication, so no copyright status can honestly be asserted. Its closest documented ancestor — Leon C. Megginson’s 1963 sentence — is a distinct line that remains in copyright, but that is not the quote credited to Hawking.

Fact-check

A textbook magnet-name misattribution

This is one of the internet’s favourite “Hawking” quotes — and there is no evidence he ever said or wrote it.

Stephen Hawking No source

The line appears in none of Hawking’s books, lectures, or documented interviews, and Wikiquote lists no sourced instance. It spread across quote sites and social media, and The Washington Post publicly asked in 2018 whether he really said it.

Charles Darwin Also misattributed

The broader “it is the most adaptable that survives” idea is routinely credited to Darwin, but Quote Investigator found it nowhere in Darwin’s writings — it is Megginson’s 1963 paraphrase.

The nearest real source is management professor Leon C. Megginson, who in 1963 paraphrased Darwin — and even he did not equate intelligence with adaptation (Quote Investigator).

Context

Why it stuck to Hawking

Stephen Hawking — a physicist who reshaped cosmology while living for decades with motor-neurone disease — is a natural magnet for an aphorism about adapting to change. That resonance is part of why the misattribution stuck so hard, especially in the wave of tributes after his death in March 2018.

The quote also rides on an older, equally false Darwin meme. Once a line about surviving-by-adapting was loose in the culture, compressing it to “intelligence is the ability to adapt to change” and attaching it to a beloved genius was an easy, unverified step.

A line about adapting, pinned to a man the world watched adapt.

Explore

Filed under

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

Change Wisdom Growth

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: “Most Adaptable that Survives”quoteinvestigator.com

Traces the “adapt to change survives” family to Megginson’s 1963 Darwin paraphrase; no Hawking.
Leon C. Megginsonen.wikipedia.org

Biography of the professor whose 1963 restatement of Darwin seeded this quote family.
Stephen Hawking (Wikiquote)en.wikiquote.org

Hawking’s sourced quotations — this line is absent from the documented canon.
Did Hawking really say it?washingtonpost.com

2018 piece questioning the Hawking attribution directly.
Darwin ‘most adaptable’ fact-checksnopes.com

Independent fact-check of the related Darwin misquote and its Megginson origin.

The author

About Leon C. Megginson

Leon C. Megginson

1921–2010 · American management professor, Louisiana State University

Leon C. Megginson was an American professor of management and marketing who taught for decades at Louisiana State University. In a 1963 address later published as “Lessons from Europe for American Business,” he offered his own loose restatement of Darwin’s On the Origin of Species — arguing that the species that survives is the one best able to adapt to a changing environment. He never claimed to be quoting Darwin verbatim, but over the following decades his paraphrase was streamlined and re-pinned onto Darwin, and later onto other famous names.

For writers & researchers

Cite this

Closest documented ancestor

Leon C. Megginson, “Lessons from Europe for American Business,” Southwestern Social Science Quarterly 44, no. 1 (1963): 3–13 — the documented ancestor of the “adapt to change” quote family. No primary source exists for the exact wording attributed to Stephen Hawking.

This verification page

Quotle.info. “Who really said ‘Intelligence is the ability to adapt to change’?” Last verified 16 Jul 2026. https://quotle.info/who-said/intelligence-is-the-ability-to-adapt-to-change

Copied