From http://en.wikipedia.org/wiki/Nineteen_Eighty-Four
Newspeak is closely based on English but has a greatly reduced and simplified vocabulary and grammar. This suits the totalitarian regime of the Party, whose aim is to make any alternative thinking—"thoughtcrime", or "crimethink" in the newest edition of Newspeak—impossible by removing any words or possible constructs which describe the ideas of freedom, rebellion and so on.