[mbynack]

The definition of insanity is doing the same thing over and over and expecting different results.
Benjamin Franklin

according to QuotesOnLine.com it was Albert Einstein who said that.

[PaxMacian]

BrainyQuote.com has it as Ben
http://www.brainyquote.com/quotes/quotes/b/benjaminfr109067.html
But, they don't reference it.