Don't confuse your sources.

Albert Einstein (March 14, 1879 – April 18, 1955)

I have heard many people say "the definition of insanity is doing the same thing over and over again and expecting different results." This is not true.  The aforementioned quote is primarily attributed to Albert Einstein, but this and other variations of the quote have been attributed to others as well including Benjamin Franklin, an old Chinese proverb, and Rita Mae Brown." In addition, countless 12 step programs use this as their mantra.

One should always be cautious when quoting or defining a term.  Be sure that you have verified your sources before you carve them in stone.

The Definition of insanity according to Oxford Dictionary is "the state of being seriously mentally ill." or "Extreme foolishness or irrationality." One who is mentally ill, may or may not exhibit the behaviors that Einstein mentions.

The devil is in the details.  Watch out!