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Case file

Mortimer J. Adler

Wikipedia's first sentence called it “american philosopher and author”. Today it says “american philosopher”. The one-line description Wikipedia serves to search engines and AI systems read “American philosopher and educator”. It now reads “American philosopher, author and educator (1902–2001)”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2005

Mortimer Jerome Adler ( December 28 , 1902 – June 28 , 2001 ) was an American philosopher and author.1 Adler was born in New York City . After dropping out of high school at age 14, he worked as a copy boy for the New York Sun . Wanting to become a journalist , he took writing classes at night where he discovered the works of men he would come to call heroes: Plato , Aristotle , Thomas Aquinas , John Locke , John Stuart Mill and others. He went on to study philosophy at Columbia University . Though he failed to complete the necessary physical education requirements for a bachelor's degree, he stayed at the university and eventually was given a teaching position and was awarded a doctorate in philosophy. Adler was appointed to the philosophy faculty at the University of Chicago in 1930, where he met its president Robert Hutchins , with whom he founded the Great Books of the Western World program. He founded and served as director of the Institute for Philosophical Research in 1952. He founded the Paedia Program, a grade-school curriculum centered around guided reading and discussion of difficult works (as judged for each grade).2 With Max Weismann , he founded The Center for the Study of The Great Ideas.3 Adler long strove to bring philosophy to the masses, and some of his works (such as How to Read a Book ) became popular bestsellers. Adler was often aided in his thinking and writing by Arthur Rubin, an old friend from his Columbia undergraduate days. I have no interest in the academic audience at all. I'm interested in Joe Doakes. A general audience can read any book I write—and they do." Adler took a long time in his own life to "make up his mind" about theological issues. In Volume 51 of the Mars Hill Audio Journal ( 2001 ), Ken Meyer includes his 1980 interview with Adler, conducted after How to Think About God was published. Meyer reminisces, "During that interview, I asked him why he had never embraced the Christian faith himself. He explained that while he had been profoundly influenced by a number of Christian thinkers during his life, ...there were moral—not intellectual—obstacles to his conversion. He didn't explain any further." Meyer goes on to point out that Adler finally "surrendered to the hound of heaven" and "made a confession of faith and was baptised " only a few years after that interview. Offering insight into Adler's conversion, Meyer quotes Adler from his subsequent 1990 article in Christianity magazine: "My chief reason for choosing Christianity was because the mysteries were incomprehensible. What's the point of revelation if we could figure it out ourselves? If it were wholly comprehensible, then it would just be another philosophy." Also in that 1980 interview, Meyer "playfully" asked Adler which single book he would want to take on a desert island. Adler responded with eleven: Thucydides ' The History of the Peloponnesian War [1] 5 or 6 of Plato 's Dialogues Aristotle 's Ethics & Politics Augustine of Hippo 's Confessions Plutarch 's Lives Dante 's Divine Comedy some plays of Shakespeare Montaigne 's Essays Gulliver's Travels Locke 's Second Treatise on Government Tolstoy 's War and Peace In the summer of 1981 Adler conducted a seminar at the Aspen Institute in Colorado based on his book Six Great Ideas . It was filmed by PBS for a popular television series hosted by Bill Moyers the following year. Adler was a controversial figure in some circles who saw his focus on the classics as eurocentric and dogmatic, and he was never afraid to speak his mind. Adler was also a world federalist .4

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 15916519.
Today
Wikipedia's first sentence called it “american philosopher and author”. Today it says “american philosopher”. The one-line description Wikipedia serves to search engines and AI systems read “American philosopher and educator”. It now reads “American philosopher, author and educator (1902–2001)”. Read the current article and compare.
2005201020152020Oct '232025
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What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2005, and today's defining sentence is their current revision.

Then

american philosopher and author

Now

american philosopher

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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