The principle of reality is at the heart of the Theory of Instances of Enunciation because reality is an inherent dimension of language. In the phenomenological perspective of Jean-Claude Coquet, there are two domains of reality: the first is that of predication, which shows our presence in the world, and the second is that of assertion in correlation with the first. According to Coquet, “the first can exist without the second, but the second cannot exist without the first. There is no private subject of preaching” (1997: 250). He calls these two universes of reality “phusis and logos”.The instance of enunciation is not only located in the universe of logos; his judgments are based on his perceptions in the universe of phusis. Thus, the producer of discourse is a subject only when he is conscious and voluntary, and apart from that, he shares his field of existence with the quasi-subject and the non-subject whose limits are drawn on the criterion of the ability to judge. The quasi-subject corresponds to a transitional moment where judgment is weakened. Non-subject emerges when judgment is suppressed or disabled by forces within us or by forces above us. The non-subject is a concept which enriches the theory of signs; we propose to study this notion using examples taken from the Comédie humaine by Honoré de Balzac.