"To know and not to know, to be conscious of complete truthfulne­ss while telling carefully constructe­d lies, to hold simultaneo­usly two opinions which cancelled out, knowing them to be contradict­ory and believing in both of them, to use logic against logic, to repudiate morality while laying claim to it, to believe that democracy was impossible and that the Party was the guardian of democracy."

Source: George Orwell, A.M. Heath (2003). “Animal Farm and 1984”, p.136, Houghton Mifflin Harcourt