Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
Douglas Noel Adams was an English author, scriptwriter, essayist, humorist, satirist and dramatist.
Adams is best known as the author of The Hitchhiker's Guide to the Galaxy, which originated in 1978 as a BBC radio comedy before developing into a "trilogy" of five books that sold more than 15 million copies in his lifetime and generated a television series, several stage plays, comics, a computer game, and in 2005 a feature film. Adams's contribution to UK radio is commemorated in The Radio Academy's Hall of Fame.
Adams also wrote Dirk Gently's Holistic Detective Agency and The Long Dark Tea-Time of the Soul , and co-wrote The Meaning of Liff , The Deeper Meaning of Liff , Last Chance to See , and three stories for the television series Doctor Who; he also served as script editor for the show's seventeenth season in 1979. A posthumous collection of his works, including an unfinished novel, was published as The Salmon of Doubt in 2002.
Adams was known as an advocate for environmentalism and conservation, as a lover of fast cars, cameras, technological innovation and the Apple Macintosh, and as a "devout atheist".

Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
Source: The Ultimate Hitchhiker's Guide to the Galaxy
“I am a private detective. I am paid to be inquisitive and presumptuous.”
Douglas Adams The Long Dark Tea-Time of the Soul
Source: The Long Dark Tea-Time of the Soul
“How many roads must a man walk down?”
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
“Do you find coming to terms with the mindless tedium of it all presents an interesting challenge?”
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
“Who is this god person anyway?”
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
Douglas Adams book Dirk Gently's Holistic Detective Agency
Source: Dirk Gently's Holistic Detective Agency
Douglas Adams book Dirk Gently's Holistic Detective Agency
Source: Dirk Gently's Holistic Detective Agency
“Marvin was humming ironically because he hated humans so much.”
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
“I was created to fulfill a function and I failed in it. I negated my own existence.”
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
Douglas Adams book The Restaurant at the End of the Universe
Source: The Restaurant at the End of the Universe
Douglas Adams book The Salmon of Doubt
Source: The Salmon of Doubt (2002)
Context: My favorite piece of information is that Branwell Brontë, brother of Emily and Charlotte, died standing up leaning against a mantelpiece, in order to prove it could be done. This is not quite true, in fact. My absolute favorite piece of information is the fact that young sloths are so inept that they frequently grab their own arms and legs instead of tree limbs, and fall out of trees.
“The complexities of cause and effect defy analysis.”
Douglas Adams book Dirk Gently's Holistic Detective Agency
Source: Dirk Gently's Holistic Detective Agency
Douglas Adams book The Restaurant at the End of the Universe
Source: The Restaurant at the End of the Universe
“I've had the sort of day that would make St. Francis of Assisi kick babies.”
Douglas Adams The Long Dark Tea-Time of the Soul
Source: The Long Dark Tea-Time of the Soul
Douglas Adams book So Long, and Thanks for All the Fish
Source: So Long, and Thanks for All the Fish
Douglas Adams The Long Dark Tea-Time of the Soul
Source: The Long Dark Tea-Time of the Soul
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
“A beach house isn't just real estate. It's a state of mind.”
Douglas Adams book Mostly Harmless
Source: Mostly Harmless
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
Douglas Adams book The Restaurant at the End of the Universe
Source: The Restaurant at the End of the Universe
“The little waiter's eyebrows wandered about his forehead in confusion.”
Douglas Adams book The Restaurant at the End of the Universe
Source: The Restaurant at the End of the Universe
Source: The Ultimate Hitchhiker's Guide to the Galaxy
Douglas Adams book Dirk Gently's Holistic Detective Agency
Source: Dirk Gently's Holistic Detective Agency (1987)
“They’ve got as much sex appeal as a road accident.”
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
“High on a rocky promontory sat an Electric Monk on a bored horse.”
Douglas Adams book Dirk Gently's Holistic Detective Agency
Source: Dirk Gently's Holistic Detective Agency
Douglas Adams book So Long, and Thanks for All the Fish
Source: So Long, and Thanks for All the Fish
Douglas Adams The Long Dark Tea-Time of the Soul
Source: The Long Dark Tea-Time of the Soul
“He felt like an old sponge steeped in paraffin and left in the sun to dry.”
Douglas Adams book Dirk Gently's Holistic Detective Agency
Source: Dirk Gently's Holistic Detective Agency
Douglas Adams The Hitchhiker's Guide to the Galaxy pentalogy
Source: The Hitchhiker's Guide to the Galaxy
Source: The Ultimate Hitchhiker's Guide to the Galaxy
“He had got himself a life. Now he had to find a purpose in it.”
Douglas Adams book Mostly Harmless
Source: Mostly Harmless
Douglas Adams book So Long, and Thanks for All the Fish
Source: So Long, and Thanks for All the Fish
Source: The Ultimate Hitchhiker's Guide to the Galaxy