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Who really said it

I'm not young enough to know everything

Not Oscar Wilde — actually J. M. Barrie J. M. Barrie 1860–1937 · Scottish novelist & playwright, creator of Peter Pan
Disputed Free to reuse

The line belongs to J. M. Barrie’s comedy The Admirable Crichton (1902), where the aristocratic dandy Ernest delivers it in Act I — and even labours to explain the joke. The character is a deliberate parody of a Wilde-style epigram-monger, which is likely why the quip later drifted onto Wilde himself. Quote Investigator found no evidence Wilde ever wrote or spoke it.

Last verified 8 Jul 2026 · how we verify · spot an error?

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Disputed credit — copy with the correction

“I'm not young enough to know everything” J. M. Barrie, The Admirable Crichton (1902), Act I. Often misattributed to Oscar Wilde.

The slide-ready mistake: crediting this to Oscar Wilde. Use the credit shown above instead.

Can you use it?

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In context

Evoking the world of J. M. Barrie — Scottish novelist & playwright, creator of Peter Pan. Theme: "I'm not young enough to know everything". 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 "I'm not young enough to know everything". 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 line in Barrie’s play

Work
The Admirable Crichton
Author
J. M. Barrie (1860–1937)
First staged
1902 · Act I, Loam House, Mayfair
Spoken by
Ernest Woolley, a Wildean dandy

ERNEST: I’m not young enough to know everything.
TREHERNE: How do you mean, Ernest?
ERNEST: I mean what I say.
LADY MARY: Say it again; say it more slowly.
ERNEST: I’m—not—young—enough—to—know—everything.
TREHERNE: I see. What you really mean, my boy, is that you are not old enough to know everything.
ERNEST: No, I don’t.

Barrie stages the epigram as a dud: Ernest has to repeat it and nobody in the room is impressed — the opposite of a Wilde triumph.

The Admirable Crichton, full text at Project Gutenberg

How we verified this

Public domain

The Admirable Crichton was first staged in 1902 and published well before 1931 (it is freely available at Project Gutenberg), so the text is in the public domain in the United States.

Fact-check

How Wilde got the credit

The line is genuinely witty and Wildean in flavour, so it reads perfectly as an Oscar Wilde epigram — but the evidence points squarely at J. M. Barrie.

Oscar Wilde No source in his work

Quote Investigator found no substantive evidence Wilde ever wrote or said this; it appears in none of his works. The related line Wilde did publish in 1894 was “The old believe everything: the middle-aged suspect everything: the young know everything” — a different joke.

20th-century quote compilers Proximity slip

Per QI, Herbert Prochnow’s 1955 Speaker’s Handbook correctly credited Barrie but printed Wilde’s name nearby; Robert Byrne’s 1986 collection then credited Wilde outright, and the mistake propagated.

The words are Barrie’s, written for a fictional dandy who is himself a send-up of Wilde — confirmed in Act I of The Admirable Crichton.

Context

Why the confusion is almost poetic

Barrie wrote Ernest Woolley as a gentle parody of the Wilde-style wit — a young man who manufactures paradoxes and then, comically, has to explain them because no one laughs. The joke of the scene is that the epigram fails.

So the line was designed to sound like Wilde. That it later got filed under Wilde’s name is, in a sense, the parody landing a century late.

Barrie wrote the line to sound like Wilde — so of course it ended up credited to him.

Explore

Filed under

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

Humility 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 Origin: I'm Not Young Enough To Know Everythingquoteinvestigator.com

The definitive investigation crediting Barrie and debunking the Wilde attribution.
The Admirable Crichton (full text)gutenberg.org

Barrie's complete play; the line is in Act I.
J. M. Barrieen.wikiquote.org

Sourced Wikiquote entry listing the line under The Admirable Crichton.
Who Said, 'I am not young enough to know everything'?interestingliterature.com

Literary discussion of Ernest as a Wilde parody and the misattribution.
Quote Origin: The Old Believe Everything… The Young Know Everythingquoteinvestigator.com

Wilde's actual 1894 epigram on youth, distinct from Barrie's line.

The real author

J. M. Barrie

J. M. Barrie

1860–1937 · Scottish novelist & playwright, creator of Peter Pan

Sir James Matthew Barrie (1860–1937) was a Scottish dramatist and novelist best known for creating Peter Pan. A contemporary of Oscar Wilde, he was a master of drawing-room comedy; The Admirable Crichton (1902) is among his most admired plays. In it he built the character Ernest partly to lampoon the Wilde-style epigram-dropper — which is why one of Ernest’s lines eventually got mistaken for a genuine Wilde saying.

For writers & researchers

Cite this

The Admirable Crichton, Act I

J. M. Barrie, The Admirable Crichton (first staged 1902), Act I. Earliest documented source of the line.

This verification page

Quotle.info. “Who really said ‘I'm not young enough to know everything’?” Last verified 8 Jul 2026. https://quotle.info/who-said/im-not-young-enough-to-know-everything

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