Doublethink
The mental discipline of holding two contradictory beliefs at once and accepting both as true. It makes total obedience to the regime possible.
Source
1984 George Orwell ／ 1949
A near future ruled by a totalitarian state. The Party controls even people’s words and memories, watching thought itself in the name of Big Brother. It follows the small rebellion of Winston, a low-ranking Party member — a founding work of dystopian fiction.