The Little Prince. Mushroom.
"I know a planet where there is a certain red-faced gentleman. He has never smelled a flower. He has never looked at a star. He has never loved any one. He has never done anything in his life but add up figures. And all day he says over and over, just like you: 'I am busy with matter of consequence!" And that makes him swell up with pride. But he is not a man - he is a mushroom!"