Do you know the definition of insanity? Doing the same thing over and over and expecting different results."

"Wrong. That's the definition of determination.

She’d read somewhere that the definition of crazy was doing the same thing over and over but expecting different results.

Stupidity is doing the same thing and expecting a different result.

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.

Einstein wrote that insanity is doing the same thing over and over and expecting a different result. That said, is it crazier to repeatedly throw yourself against a window, or to repeatedly open that window, believing the creatures that are throwing themselves against it might come into your house, take a look around, and leave with no hard feelings?

Do you know what Albert Einstein's definition of insanity was?"
"No."
"Doing the same thing over and over and expecting different results.