Doublethink is an inherently contradictory part of Newspeak and 1984 Party politics. According to the novel, doublethink is, "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."