pg. 35: "Who controls the past, controls the future; who controls the present controls the past." The official party slogan, as interpreted by Winston, the main character.
To a great extent, the above quote is ringing true in our world. We can revise history to suit our own needs and agendas. With a single thought and the stroke of a pen, we can erase an entire people off the face of this planet. Powerful, huh?