The document discusses Newspeak, the official language of Oceania in George Orwell's novel 1984. Newspeak aims to restrict freedom of thought by limiting vocabulary related to ideas such as freedom and rebellion. It also introduces concepts like "doublethink" where contradictory beliefs can be held simultaneously. The goal is for Newspeak to eventually replace Oldspeak, eliminating undesirable concepts that do not conform to the totalitarian regime. Euphemistic terms are constructed to disguise the actual meaning of words and concepts. Thinking unapproved thoughts is considered "crimethink" and can result in vaporization.