Sam Jordison of the Guardian had this to say about Ringworld, the masterpiece that is centered around around a theoretical ring-shaped space-habitat:
Larry Niven’s 1970 Hugo award winner, Ringworld, is arguably one of the most influential science fiction novels of the past 50 years. As well as having had a huge impact on nearly all subsequent space operas (Iain M Banks’ Culture series and Alastair Reynolds’ House of Suns are just two), the book has helped generate a multi-billion-dollar industry.
To add to this Jonathan Cowie, who wrote Essetial SF: A Concise Guide, called Ringworld “a landmark novel of planetary engineering (for want of a better term) that ranks alongside the late Bob Shaw’s Orbitsville.”
Jo Walton, again, comments on this novel about interstellar diplomacy and anthropology:
The Left Hand of Darkness didn’t just change science fiction—it changed feminism, and it was part of the process of change of the concept of what it was to be a man or a woman. The battle may not be over. What I mean is that thanks in part to this book we’re standing in a very different place from the combatants of 1968.
In 1994 literary critic Harold Bloom included it in his Western Canon of Literature, going as far as to say, “Le Guin, more than Tolkien, has raised fantasy into high literature, for our time.”
By 2007, this cyberpunk classic had sold more than 6.5 million copies. It’s been adapted into almost every genre, and it’s responsible for introducing numerous terms, and, arguably, the idea of the internet. The Encyclopedia of NewMedia calls Neuromancer more important than On the Road in its cultural influence, and credits its formative influence on subsequent media, from Wired magazine to The X-Files, to the internet itself. After the initial inventions of the ARPANET, Paul T. Riddell writes, the internet took shape due to “impressionable students reading [Gibson's] stories and novels; instead of whining and complaining after reading Robert Anton Wilson, they read Gibson and thought, ‘You know, we can do this.’”
Neuromancer was the first novel to win all three of the major science-fiction awards —- the Nebula, the Hugo, and Philip K. Dick Award for paperback original.