In 1984, what is a quote that could explain the meaning of the slogan "War is Peace, Freedom is Slavery, Ignorance is Strength?"

Quotes
related to the slogan explain how the government of Oceania holds all of the power over its
people.

The definition of "Doublethink" is an example of Big
Brother's power over its citizens.   describes "Doublethink" as "The power of
holding two contradictory beliefs in ones mind simultaneously, and accepting both of them."
 The government insists the contradiction makes sense.  Orwell suggests that the way to control
people is to ensure an "unending series of victories over your own memory" and
individual thought.

The Party's slogan represents the essence of Doublethink.
 Each portion contains its opposite.  At face value, the slogan does not make sense. However,
the government wants its citizens to accept the contradiction as fact.  Once they accept it, the
people become easily pliable. A society is easier to control when its members are told that
everything is fine and there are no problems. This is a reflection of the power that the
government has over its citizens. By being reminded constantly that "ignorance is
strength" or "freedom is slavery," no one questions anything.  The ability to
control how people think is one of the ways in which power is established. Doublethink
enables.