evidence: Albert Einstein often gets the credit for this saying, but you probably won’t be surprised to learn that he never actually said it. This misattributed quotation has been well documented: it appears to have originated around 1980 in literature published by Narcotics Anonymous (Becker; "Insanity"). [...] Becker, Michael. "Einstein Probably Didn’t Say That Famous Quote about Insanity." Becker’s Online Journal, 13 Nov. 2012, www.news.hypercrit.net/2012/11/13/einstein-on-insanity. [...] Quote Investigator, 23 Mar. 2017, quoteinvestigator.com/2017/03/23/same.