1984 by George Orwell

Orwell's work remains influential in popular culture and in political culture, and the adjective "Orwellian"—describing totalitarian and authoritarian social practices—is part of the English language, like many of his neologisms, such as "Big Brother", "Thought Police", "Two Minutes Hate", "Room 101", "memory hole", "Newspeak", "doublethink", "proles", "unperson", and "thoughtcrime".