“...the definition of crazy is doing something close to the same thing twice and expecting a different end.”
“My dad used to say the definition of stupidity was doing the same thing over and over again and expecting a different result. Or maybe that was the definition of crazy.”
“One of the better definitions of insanity - doing the exact same thing over and over and expecting the result to be different.”
“Do you know what Albert Einstein's definition of insanity was?" "No." "Doing the same thing over and over and expecting different results.”
“Every human being thinks different things are right, and different things are wrong. Whether something is normal or not, it is still different for every person. Happiness is the same – everyone has their own definition of it.”
“Insanity is doing the same thing, over and over again, but expecting different results.”