Did Albert Einstein say, “The definition of insanity is doing the same thing over and over again and expecting different results”? No reliable evidence connects the sentence to Einstein. It does not come with a speech, letter, interview or publication from his lifetime, and closely matching wording appears in recovery literature decades after his death in 1955.
The compact evidence record is available in the Source Center entry for the “definition of insanity” misattribution. You can also visit the Albert Einstein author profile or compare two documented Einstein quotations about imagination and knowledge and life and riding a bicycle.
Quick verdict: the quotation is misattributed
| Popular claim | Albert Einstein defined insanity as repeating the same action while expecting different results. |
|---|---|
| Source status | Misattributed. No reliable Einstein primary source has been identified. |
| Earlier documented wording | “Insanity is repeating the same mistakes and expecting different results.” |
| Documented setting | Recovery literature associated with Narcotics Anonymous, around 1980–1981. |
| Later exact match | Rita Mae Brown’s novel Sudden Death, published in 1983, contains the familiar “doing the same thing” form. |
| Evidence record | Open the Source Center record and references |
What is the popular “definition of insanity” quote?
“The definition of insanity is doing the same thing over and over again and expecting different results.”
Widely circulated saying; not reliably attributable to Albert Einstein
The sentence is usually presented as a compact argument for changing an ineffective method. Its modern tone and apparent connection to experimentation make Einstein seem like a plausible speaker. Plausibility, however, is not a source. A reliable attribution needs a document produced during the person’s lifetime or a traceable contemporary account.
For this saying, popular quotation pages often repeat Einstein’s name without identifying where or when he supposedly said it. The absence of a document is especially important because Einstein’s letters, papers, interviews and public statements have been extensively collected and studied.
Where does the wording actually appear?
A closely related sentence in recovery literature
The official Narcotics Anonymous introductory guide contains the sentence “Insanity is repeating the same mistakes and expecting different results.” It appears during a discussion of addiction, repeated destructive behaviour and the need to respond differently.
This is not presented as a quotation from Einstein. It belongs to a practical recovery context: a person recognizes that returning to the same harmful pattern is unlikely to create a new outcome. The Modern Language Association’s review of commonly misattributed quotations likewise places the saying in Narcotics Anonymous literature around 1980 rather than in Einstein’s work.
Rita Mae Brown’s 1983 novel
A nearly exact version appears in Rita Mae Brown’s 1983 novel Sudden Death: “Insanity is doing the same thing, over and over again, but expecting different results.” The line is spoken within the novel. That makes the book an important documented appearance of the familiar wording, but it does not prove that Brown created every earlier form of the saying.
The safest conclusion is therefore more precise than assigning a new famous author: closely related forms circulated in recovery settings around 1980–1981, and Brown’s novel supplied an early exact printed match in 1983. Neither route leads back to Einstein.
Why was the sentence attached to Einstein?
Einstein’s name gives an aphorism immediate authority. The quotation also sounds as though it might describe experimental reasoning: if a method repeatedly fails, change the method. Once a memorable sentence is printed beside a famous portrait, later websites and social posts tend to copy the complete package rather than checking the underlying document.
That process obscures an important distinction. Scientists often repeat an experiment precisely because repetition can confirm whether a result is reliable. Repeating a controlled test is not the same as repeating an ineffective decision while refusing to learn from the outcome. The saying is practical advice, not a definition of scientific method.
Is it a real definition of insanity?
No. The sentence is an aphorism, not a medical, psychological or legal definition. It uses “insanity” informally to criticize a rigid pattern of behaviour. Mental-health conditions cannot be reduced to one motivational slogan, and the line should not be used to diagnose a person.
Its useful core can be expressed without the misleading label: when a repeated approach consistently fails, review the evidence and consider changing the approach. That is a reasonable principle, but it does not require Einstein’s name.
How should the quotation be cited?
- Do not write: Albert Einstein said, “The definition of insanity…”
- For the familiar wording: describe it as a widely circulated saying, or cite Rita Mae Brown’s Sudden Death when discussing that documented 1983 appearance.
- For the recovery-literature form: quote “Insanity is repeating the same mistakes and expecting different results” and cite the relevant Narcotics Anonymous publication.
- When explaining the history: state that no reliable Einstein source has been found and distinguish the different wordings and dates.
Verified Einstein quotations provide a useful comparison
Authentic Einstein quotations normally come with a document and context. “Imagination is more important than knowledge” can be read in George Sylvester Viereck’s 1929 interview. The bicycle-and-balance comparison is documented in a 1930 letter to Einstein’s son Eduard, although its popular wording is a later polished variant.
Those examples show why attribution status should not be binary guesswork. A sentence may be an exact quotation, a translated or polished variant, or a complete misattribution. The Source Center records those differences instead of placing every familiar line under a famous name.
Frequently asked questions
Did Albert Einstein define insanity as doing the same thing repeatedly?
No reliable source shows that he did. The sentence appears long after Einstein’s death and is classified as misattributed by quotation researchers and reference works.
Did Benjamin Franklin say it?
No reliable Franklin source has been identified either. Attaching the sentence to a second famous thinker does not solve the missing-document problem.
Who originally said the quote?
The evidence does not support one simple answer. A closely related form is documented in recovery literature around 1980–1981, while Rita Mae Brown’s Sudden Death contains the familiar form in 1983. It is more accurate to describe that history than to invent a single certain originator.
Can I still use the saying?
Yes, but remove Einstein’s name and avoid presenting it as a clinical definition. If a precise citation matters, use one of the documented wordings and identify its source.
Sources and further reading
- Narcotics Anonymous World Services, An Introductory Guide to Narcotics Anonymous
- MLA Style Center, “Five Commonly Misattributed Quotations”
- Quote Investigator, documented history of the repeating-the-same-thing saying
Continue with wisdom quotes with transparent collection sources or open the quote generator with Albert Einstein selected. Generator results are intended for discovery; claims that matter should be checked against a primary or scholarly source.