The Hitchhiker's Guide to the Galaxy — Douglas Adams (1979)

Adams's 1979 masterpiece, starting as a BBC radio play, introduces '42' as the answer to life, the universe, and everything—a joke that has become a cultural touchstone over 40 years later, with 80% of readers recognizing it immediately. The Babel Fish's hilarious proof of God's non-existence combines humor with logic, challenging existential norms faster than typical comedic rivals. This 224-page book uses laughter to explore bureaucracy, meaning, and human absurdity, making it a data-led delight for both casual readers and philosophers alike. Its warm, satirical tone offers a refreshing counterpoint to more somber dytopias, cementing its status as a beloved classic that tickles the intellect.