1000 novels everyone must read: Science Fiction & Fantasy (part one)

Originating as a BBC radio series in 1978, Douglas Adams's inspired melding of hippy-trail guidebook and sci-fi comedy turned its novelisations into a publishing phenomenon. Douglas wrote five parts from 1979 onwards (the first sold 250,000 in three months), introducing the world to Marvin the Paranoid Android, the computer Deep Thought, space guitarist Hotblack Desiato (named after Adams's local estate agent) and the Guide itself, a remarkably prescient forerunner to the internet. Aldiss's first novel is a tour-de-force of adventure, wonder and conceptual breakthrough. Set aboard a vast generation starship millennia after blast-off, the novel follows Roy Complain on a voyage of discovery from ignorance of his surroundings to some understanding of his small place in the universe. Complain is spiteful and small-minded but grows in humanity as his trek through the ship brings him into contact with giant humans, mutated rats and, ultimately, a wondrous view of space beyond the ship. One of the first attempts to write a comprehensive "future history", the trilogy - which also includes Foundation and Empire (1952) and Second Foundation (1953) - is Asimov's version of Gibbon's Decline and Fall of the Roman Empire, set on a galactic scale. Hari Seldon invents the science of psychohistory with which to combat the fall into barbarianism of the Human Empire, and sets up the Foundation to foster art, science and technology.