The 50 Best Science Fiction Books of All Time

From a story on esquire.com by Adrienne Westenfeld headlined “The 50 Best Sci-Fi Books of All Time”:

Since time immemorial, mankind has been looking up at the stars and dreaming, but it was only centuries ago that we started turning those dreams into fiction. And what remarkable dreams they are—dreams of distant worlds, unearthly creatures, parallel universes, artificial intelligence, and so much more. Today, we call those dreams science fiction.