"Humans believe they are more intelligent than dolphins because they have achieved so much - New York, the wheel, wars, and so on - while all the dolphins ever

"Humans believe they are more intelligent than dolphins because they have achieved so much - New York, the wheel, wars, and so on - while all the dolphins ever did was mess around in the water having a good time. Conversely, dolphins believe that they are more intelligent than humans for precisely the same reason." - Douglas Adams