1984 by George Orwell

Nineteen Eighty-Four is a dystopian novel and cautionary tale by English writer George Orwell. It was published on 8 June 1949 by Secker & Warburg as Orwell's ninth and final book completed in his lifetime.
It tells the story of Winston Smith, a citizen of the miserable society of Oceania, who is trying to rebel against the Party and its omnipresent symbol, Big Brother.