The Thought Police, Doublethink, Newspeak, Big Brother - 1984 itself: these terms and concepts have moved from the world of fiction into our everyday lives. They are central to our thinking about freedom and its suppression; yet they were newly created by George Orwell in 1949 as he conjured his dystopian vision of a world where totalitarian power is absolute. In this novel, continuously popular since its first publication, readers can explore the dark and extraordinary world he brought so fully to life. The principal characters who lead us through that world are ordinary human beings like ourselves: Winston Smith and Julia, whose falling in love is also an act of rebellion against the Party. Opposing them are the massed powers of the state, which watches its citizens on all sides through technology now only too familiar to us. No-one is free from surveillance; the past is constantly altered, so that there is no truth except the most recent version; and Big Brother, both loved and feared, controls all.

In 1943, there was an urgent need for Animal Farm. The Soviet Union had become Britain's ally in the war against Nazi Germany, and criticism of Stalin's brutal regime was either censored or discouraged. In any case, many intellectuals on the left still celebrated the Soviet Union, claiming that the terrors of its show trials, summary executions and secret police were either exaggerated or necessary. But, to Orwell, Stalin was always a "disgusting murderer" and he wanted to remind people of this fact in a powerful and memorable way. But how to do it? A political essay would never reach a wide enough audience; a traditional novel would take too long to write. Orwell hit on the inspired idea of combining the moralism of the traditional 'beast fable' with the satire of Gulliver's Travels.