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 on. Whilst all the dolphins had ever done was muck about in the water having a good time.
— The Hitchhiker’S Guide To The Galaxy Book (Peter Jones)
21 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 3 sitcom.
You can hear this line at 00:26:25.860 in the Blu-ray version of the TV Series.
