"The definition of insanity is doing the same thing over and over and expecting different results."
— Benjamin Franklin

January 1, 1970

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Added on April 10, 2026
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AphoristsEngineers from the United StatesFounding Fathers of the United States of AmericaElectrical engineersGovernors of Pennsylvania
Original Language: English

Sources

Misattributed to various people, including Albert Einstein and Mark Twain. An early occurrence was used as a teaching reference at University of California, Irvine in social science lectures in the later 1960s. Also found in a 1981 text from Narcotics Anonymous.