it is the act itself of producing an utterance, and not the text of the utterance, that is our object. This act is the fact of the speaker who mobilises the language on his or her own behalf.
This passage states Benveniste’s canonical definition: enunciation is the act of utterance-production, not the utterance-product, and it is through this act that the speaker constitutes itself as a subject.
, Last Lectures: Collège de France 1968 and 1969, 2012thesis