What are the Party mottos in 1984? What is unusual about them?

The
Party mottos seem unusual because they appear to be paradoxical, but what is perhaps even more
unusual is that they do in fact, in the context of the dystopian setting, make sense. The motto,
"War is Peace," for example, appears paradoxical, but war
is in fact necessary to maintain the peace because it provides the people with vital
opportunities to release their suppressed emotions, namely their anger.

They
are angry, whether they know it or not, with the Party for making their lives so miserable, but
they cannot direct their anger towards the Party, and so the Party provides them with constant
war. If the Party didn't provide the people with war, then the anger, needing some form of
release, might end up being directed their way. If this was to happen, then there would almost
certainly be a civil war between those for the Party and those against the Party. To avoid this
scenario and to keep the peace, the Party provides the people with imaginary wars.

The second motto, "Freedom is...

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