Einstein’s name has also been affixed since his death to quotes from elsewhere. “The definition of insanity is doing the same thing over and over and expecting different results,” for instance, was traced by Einstein archivist Barbara Wolff to US writer Rita Mae Brown’s Sudden Death (1983). (Source)

Go argue with Barbara Wolff then. She seems to have got that wrong. I guess she rushed her research, being an “Einstein archivist” and all. I mean, you kinda found the right information almost immediately, right? Man, calling herself an “Einstein archivist”, and rushing to conclusion without doing her own research… the nerve of some people, right?