Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously$$$ and accepting both of them.

We are the dead. Our only true life is in the future.

You must try harder. It is not easy to become sane.

If you kept the small rules$$$ you could break the big ones.

To die hating them$$$ that was freedom.

We do not merely destroy our enemies; we change them.

But the thought of being a lunatic did not greatly trouble him; the horror was that he might also be wrong.

If there is hope$$$ it lies in the proles.

The words kept coming back to him$$$ statement of a mystical truth and a palpable absurdity.

When the white man turns tyrant$$$ it is his own freedom that he destroys.