I find myself annoyed every time someone says, "Einstein's definition of insanity is doing the same thing over and over and expecting a different result."
Now, I find that definition annoying no matter who it's attributed to, but attributing it to Einstein really takes the cake. I've done some searching, and I can't find any credible evidence that Einstein ever said such a thing. My guess is that people attribute this definition to Einstein not because he said it, but because attributing it to Einstein gives it credibility. Bah.
Whether Einstein actually defined insanity that way or not, people attribute to Einstein all kinds of stuff that he never said. Over time, I've noticed a few patterns that I now want to immortalize as theories. And I want to put my name into the theories along with Einstein's, because that will give me credibility.
Emery's Einstein Aphorism Attribution Acquisition Theory: Any saying of uncertain origin will eventually be attributed to Einstein.
Emery's Einstein Aphorism Attribution Adhesion Theory: Any saying, once attributed to Einstein, will be attributed to Einstein forever after.
If we combine these two theories, we arrive at a third:
Emery's Einstein Aphorism Attribution Accretion Theory: Einstein will eventually have said everything.
Kinda like entropy, but in reverse.