Confirmed against the primary text. The sentence appears in Maslow’s paper “A Theory of Human Motivation” ↗, Psychological Review 50, no. 4 (1943), on p. 382 — in the paragraph that first defines self-actualization. The wording is exact: no paraphrase, no tidying up.
“What a man can be, he must be” Abraham Maslow, "A Theory of Human Motivation," Psychological Review 50, no. 4 (1943), p. 382 · Verbatim: “A musician must make music, an artist must paint, a poet must write, if he is to be ultimately happy. What a man can be, he must be. This need we may call self-actualization.”
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In context
Evoking the world of Abraham Maslow — American psychologist, Brooklyn College and Brandeis University. Theme: "What a man can be, he must be". 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.
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Provenance
The source
Work
“A Theory of Human Motivation”
Published
Psychological Review 50, no. 4 (1943), pp. 370–396 — the sentence on p. 382
Author
A. H. Maslow, then at Brooklyn College
Reprinted in
Motivation and Personality (New York: Harper, 1954)
Even if all these needs are satisfied, we may still often (if not always) expect that a new discontent and restlessness will soon develop, unless the individual is doing what he is fitted for. A musician must make music, an artist must paint, a poet must write, if he is to be ultimately happy. What a man can be, he must be. This need we may call self-actualization.
Psychological Review, 1943 · p. 382
Transcribed from the full text of the 1943 article; the passage falls between the transcription’s [p. 382] and [p. 383] page markers. Note the lead-in clause: the article reads “ultimately happy,” where the widely reprinted form reads “ultimately at peace with himself.”
The complete 1943 paper is transcribed at Classics in the History of Psychology ↗, Christopher D. Green’s archive at York University. Searching the text returns the sentence once, inside the section headed “The need for self-actualization,” between the [p. 382] and [p. 383] markers.
Wikiquote’s sourced section ↗ carries the same sentence and cites Psychological Review vol. 50, no. 4 (1943), p. 382, adding that it also appears in Motivation and Personality (1954), p. 93. The page has no Misattributed or Disputed section for Maslow.
Wikipedia’s hierarchy of needs article ↗ quotes the line but cites Maslow 1954, p. 91 — the book, not the paper. That mismatch between p. 91, p. 93 and the 1943 original is the main thing this page fixes.
Quote Investigator ↗ returns no article for this quotation, which is what you would expect: it is not a contested line, only a carelessly cited one.
“A Theory of Human Motivation” was first published in 1943 in Psychological Review, a journal owned by the American Psychological Association ↗ — comfortably inside the modern copyright window, so this is not a public-domain text. The 1954 Harper edition is a separate, later publication and is held as a lending-only scan at the Internet Archive ↗. Quoting the sentence with attribution is ordinary fair use; reproducing the paper is not.
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 usually goes wrong
The name on this quote is right. What gets mangled is the source, the credit for the term, and the sentence immediately before it.
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The sourceMotivation and Personality (1954) Mis-sourced
Wikipedia’s hierarchy of needs article ↗ quotes the line and cites “Maslow 1954, p. 91”; Wikiquote cites p. 93 of the same book. Both point at the reprint. The sentence was already in print in 1943, in Psychological Review.
✕
The termKurt Goldstein Not the sentence
In the same paragraph Maslow writes that “self-actualization” was “first coined by Kurt Goldstein,” and that he is using it “in a much more specific and limited fashion” — his words, on p. 382 ↗. Goldstein supplied the label. The sentence is Maslow’s.
✕
The lead-in“ultimately at peace with himself” Variant wording
The 1943 article reads “if he is to be ultimately happy.” The form that circulates most widely — and that Wikiquote records ↗ — is “ultimately at peace with himself.” If you quote the fuller passage, the two forms are not interchangeable. The target sentence itself is identical in both.
✓The sentence is Maslow’s own, and it first reached print in 1943, in Psychological Review 50, no. 4, p. 382 ↗ — eleven years before the 1954 book almost everyone cites instead.
Context
Why this sentence mattered
Maslow’s 1943 paper is famous for its staircase — physiological needs, then safety, then love, then esteem. The trouble with a staircase is that it has to end somewhere, and Maslow needed a top step that wasn’t just “more esteem.” This sentence is that top step. Everything below it is a deficit you are trying to close; this one is a capacity you are trying to spend.
The setup does the work: “A musician must make music, an artist must paint, a poet must write.” Then the compression — what a man can be, he must be — and immediately the label: “This need we may call self-actualization.” Maslow is careful in the very next line to hand the term to Kurt Goldstein ↗, saying he is using it “in a much more specific and limited fashion.” The borrowed word, the original sentence.
Everything lower on the ladder is a hole you are filling. This is the one rung that is about spending what you have.
The sentence in full context
The paragraph opens on a warning rather than a promise: “Even if all these needs are satisfied, we may still often (if not always) expect that a new discontent and restlessness will soon develop, unless the individual is doing what he is fitted for.” Read whole, the line is less a motivational slogan than a diagnosis of why satisfied people are still restless.
Maslow immediately hedges the scope, too: “The specific form that these needs will take will of course vary greatly from person to person.” The must is not a command about ambition — it is a claim that the shape of the need is individual and non-negotiable.
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Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
1908–1970 · American psychologist, Brooklyn College and Brandeis University
Abraham Maslow (1908–1970) was an American psychologist who taught at Brooklyn College from 1937 to 1951 and at Brandeis University from 1951 to 1969. His 1943 Psychological Review paper “A Theory of Human Motivation” laid out the ladder of needs — physiological, safety, love, esteem — that tops out in self-actualization, the step this one sentence exists to define. He expanded the argument into Motivation and Personality (Harper, 1954), the book most people reach for when they quote him.
For writers & researchers
Cite this
Primary source
Maslow, A. H. “A Theory of Human Motivation.” Psychological Review 50, no. 4 (1943): 370–396, at p. 382. Reprinted in Motivation and Personality (New York: Harper, 1954).
This verification page
Quotle.info. “Who really said ‘What a man can be, he must be’?” Last verified 24 Aug 2026. https://quotle.info/who-said/what-a-man-can-be-he-must-be/