MARVIN: The first ten million years were the worst. And the second ten million, they were the worst too. The third ten million I didn’t enjoy at all. After that I went into a bit of a decline.
Douglas Adams (1952-2001) English author, humorist, screenwriter
Hitchhiker’s Guide to the Galaxy, Phase 1, “Fit the 5th” (BBC Radio) (1978-04-05)
(Source)
When adapted as a novel, Hitchhiker's Guide No. 2, The Restaurant at the End of the Universe, ch. 18 (1980), this line by Marvin the Paranoid Android remained the same.

