When you try to access a nonexistent page on this site, you will get a funny 404 error message, which makes you think that Marvin (the depressed robot from the Hitchhikers Guide to the Galaxy) is now serving web pages.
I do not know which person of which organisation originally wrote the text. There are some other websites who use the same text, or a slightly adjusted version, but they fail to mention the original author. Rumours go that the original was made by some online graphic design e-zine, maybe PixelMag.
You can see and try the error message by trying to access a nonexistent page on my website: existence is void
You can see the Marvin 404 in action here.