In a state of mind which prevents normal perception, behaviour, or social interaction. It comes from the latin insanus, from in- 'not' + sanus 'healthy'.
It is a legal definition.
Performing the same behaviors and expectations that it will change your situation is definition of insanity
He tells us that the definition of insanity for him is doing the same thing over and over again and expecting different results from it.
This is a definition of CRAZY, attributed to Albert Einstein.
There is no definition of insanity in the sense that this statement attempts: it is entirely a judgment call by whichever psychiatric authority determines based solely on a case-by-case analysis. Different doctors may disagree on whether a given individual is insane or not.
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In his famous quote, Albert Einstein addressed the problem of repeating the same actions but expecting different results, which he referred to as a form of insanity.
Einstein
A boy when he was 11 named Robbie Bender. He is 14 now.
The great physicist Albert Einstein once said, 'The definition of insanity is doing the same thing over and over again, expecting different results.'
A boy when he was 11 named Robbie Bender. He is 14 now.
He did not say it. It is misattributed to him, like the "definition of insanity" quote is misattributed to Einstein.