Dolphin wisdom

For instance, on the planet Earth, man had always
assumed that he was more intelligent than dolphins
because he had achieved so much--the wheel, New York, wars and so on--while all the dolphins had ever done was muck about in the water having a good time.  But conversely, the dolphins had always believed that they were far more intelligent than man--for precisely the same reasons.

— Douglas Adams, Hitchhiker’s Guide to the Galaxy