"The Principles of Newspeak" is an academic essay appended to the novel. It describes the development of Newspeak, the Party's minimalist artificial language meant to ideologically align thought and action with the principles of Ingsoc by making "all other modes of thought impossible." The idea that the structure of language can be used to influence thought is known as linguistic relativity.
Whether or not the Newspeak appendix implies a hopeful end to Nineteen Eighty-Four remains a critical debate, as it is in Standard English and refers to Newspeak, Ingsoc, the Party etc., in the past tense: "Relative to our own, the Newspeak vocabulary was tiny, and new ways of reducing it were constantly being devised" p. 422). Some critics (Atwood, Benstead, Milner, Pynchon) claim that for the essay's author, both Newspeak and the totalitarian government are in the past.