Quoted from dirkdiggler:"Insanity is doing the same thing over and over and expecting different results"
A. Einstein
Einstein never said it. Good for him! He was far too intelligent to make such a ridiculous, meaningless statement. Expecting a different result from the same action might be stupid, but it wouldn't be indicative of anything as drastic as an insanity diagnosis, which is an extremely serious matter.
https://www.businessinsider.com/misattributed-quotes-2013-10