The joke belongs to Grant Allen, who ended his essay “Eye versus Ear” in Post-Prandial Philosophy (Chatto & Windus, 1894) with: “What a misfortune it is that we should thus be compelled to let our boys’ schooling interfere with their education!” Allen liked it enough to reuse it in later novels. The familiar first-person wording — “I have never let my schooling interfere with my education” — appears in none of Mark Twain’s books, letters or speeches; the earliest Twain credit Quote Investigator located is a 1907 magazine advertisement.
“I have never let my schooling interfere with my education” Not Mark Twain. The maxim is Grant Allen's: "What a misfortune it is that we should thus be compelled to let our boys' schooling interfere with their education!" — Grant Allen, "Eye versus Ear," Post-Prandial Philosophy (London: Chatto & Windus, 1894). The first-person wording "I have never let my schooling interfere with my education" appears in no work by Allen or Twain; the earliest Twain credit found by Quote Investigator is a 1907 advertisement. Via Quotle.info.
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Provenance
The 1894 essay that actually contains the joke
Work
Post-Prandial Philosophy
Essay
XV, “Eye versus Ear”
First published
London: Chatto & Windus, 1894 (essays first ran in The Westminster Gazette)
Author
Grant Allen (1848–1899)
One year in Italy with their eyes open would be worth more than three at Oxford; and six months in the fields with a platyscopic lens would teach them strange things about the world around them that all the long terms at Harrow and Winchester have failed to discover to them. But that would involve some trouble to the teacher.
What a misfortune it is that we should thus be compelled to let our boys’ schooling interfere with their education!
Transcribed from the Project Gutenberg text of the 1894 Chatto & Windus edition; the sentence closes the essay.
1894 — Grant Allen closes essay XV of Post-Prandial Philosophy with the maxim; the full text is at Project Gutenberg ↗.
1895 — Allen reuses it in The Woman Who Did, chapter I: “You wouldn’t let your schooling interfere with your education,” as recorded on Wikiquote ↗.
1907 — the first Twain credit located by Quote Investigator ↗: an advertisement in The Outing Magazine Advertiser, vol. 50, p. 840.
Today — the Center for Mark Twain Studies ↗ files the line under the apocryphal Twain and notes its post-2007 explosion on social media.
✓Public domain
Post-Prandial Philosophy was first published in London in 1894 by Chatto & Windus, and Grant Allen died in 1899 — the essay and the sentence quoted here are in the public domain in the United States. The modern first-person rewording has no identified author and is not being claimed as anyone’s work.
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Fact-check
How Twain ended up with Grant Allen’s joke
This is a textbook case of quote drift: a Victorian essayist’s aside, restated by him several times, then handed to the most quotable American alive and rewritten in the first person.
✕
The attributionMark Twain Not his
The line is absent from Twain’s books, letters and speeches. The Center for Mark Twain Studies ↗ lists it among the apocryphal Twain and notes that Twain in fact warned against people who bragged of lacking formal education.
✕
The earliest Twain creditAn advertisement, 1907 1907
Quote Investigator ↗ reports that the first instance it located crediting Twain appeared in The Outing Magazine Advertiser, vol. 50, p. 840 (1907), reading “Mark Twain once said: ‘Don’t let your boy’s schooling interfere with his education.’”
✕
The wordingNobody, in this form Reshaped
The boastful first-person “I have never let my schooling interfere with my education” matches none of the documented texts — Allen’s 1894 essay is about “our boys’ schooling,” and the 1895 novel variant ↗ is second-person.
✓Credit Grant Allen, 1894 — the wording is his, the fame is Twain’s, and the “I” is somebody else’s entirely. See Quote Investigator’s chronology ↗.
Context
A joke about schools, told by a man with an Oxford degree
Allen’s essay is not a shrug at learning — it is an argument that Victorian schooling taught words instead of things. “One year in Italy with their eyes open would be worth more than three at Oxford,” he wrote, before landing the line about boys’ schooling interfering with their education. The joke was the punchline of a case, not a slogan against study.
There is an irony the Center for Mark Twain Studies enjoys pointing out: Allen held an Oxford degree and began his career as a professor. And Twain, the man now credited with the quip, actually warned against people who bragged of having no formal education.
The way to learn every subject on earth, even book-lore included, is not out of books alone, but by actual observation.
How the wording drifted
Allen’s 1894 form is third-person and about schoolboys: “let our boys’ schooling interfere with their education.” Wikiquote’s sourced Grant Allen page records a second-person version in The Woman Who Did (1895), chapter I: “You wouldn’t let your schooling interfere with your education.”
The 1907 advertisement that Quote Investigator identifies as the first Twain credit still keeps the third person: “Don’t let your boy’s schooling interfere with his education.” The boastful first-person “I have never let…” that circulates today is a later reshaping, documented in no work by either man.
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Filed under
More provenance-checked quotes on the same theme, each with its reuse status.
1848–1899 · Canadian science writer, evolutionist & novelist
Grant Allen was born on Wolfe Island near Kingston in 1848, studied at Merton College, Oxford, and became one of the late-Victorian era’s busiest popularisers of evolution — roughly thirty novels between 1884 and 1899 alongside a steady stream of science essays. His scandalous bestseller The Woman Who Did (1895) made him notorious; his weekly Westminster Gazette columns, collected as Post-Prandial Philosophy in 1894, made him quotable. He died at Hindhead in 1899, and within a decade his best line had quietly changed owners.
For writers & researchers
Cite this
Primary source
Grant Allen, “Eye versus Ear,” in Post-Prandial Philosophy (London: Chatto & Windus, 1894), essay XV — “What a misfortune it is that we should thus be compelled to let our boys’ schooling interfere with their education!” The 1907 attribution to Mark Twain is documented in The Outing Magazine Advertiser, vol. 50, p. 840, per Quote Investigator.
This verification page
Quotle.info. “Who really said ‘I have never let my schooling interfere with my education’?” Last verified 22 Jul 2026. https://quotle.info/who-said/i-have-never-let-my-schooling-interfere-with-my-education/