This is a famous quote, usually attributed to Einstein.
Everybody is a genius. But if you judge a fish by it's ability to climb a tree, it will live it's whole life believing that it is stupid
Now, here is where it gets interesting.
There is apparently no evidence whatsoever that Einstein ever said or wrote this. Only reference from quote libraries and self-help books attributing it to him.
In fairness there is no evidence he did not say it, but that is hardly cause to credit him with the quote lol.
Just goes to show how polluted the knowledge pool is LOL. I referenced it from tons of "quote sites".
I would venture to guess the quote was attributed to him post-mortem out of a desire to add credibility to the quote. Using the logic of "It would need to be from the mouth of a genius to be credible." therefor choosing his name as the credit, a logic which is very funny as it contradicts the spirit of the quote itself LOL (if everyone is a genius, why would you need to fake it coming form him in particular?)
I have always loved this quote, and made this calligraphy with it. Luckily I never added the attribution to Einstein on the actual physical paper version, so my artwork remains untainted. The quote is still great, and the meaning no less valid.
I had already posted this image with the Einstein attribution on many sites and groups before this was pointed out to me by a friend. I feel awful, I have unwittingly committed the crime of knowledge pool pollution propagation. :(
Some research into the matter (thanks for the link Alex): http://quoteinvestigator.com/2013/04/06/fish-climb/