"And if all others accepted the lie which the Party imposed-if all records told the same tale-then the lie passed into history and became truth. "Who controls the past," ran the Party slogan, "controls the future: who controls the present controls the past." And yet the past, though of its nature alterable, never had been altered. Whatever was true now was true from the everlasting to everlasting… The past, he reflected, had not merely been altered, it had been actually destroyed."
- George Orwell,1984.