 In Letter 14, Schiller suggests that when a human experiences both these drives in balance—when he is “at once conscious of his freedom and sensible of his existence” and can “feel himself matter and come to know himself as mind”—a new drive is awakened, namely the play drive [Spieltrieb] (NA XX, 353/E 126). In the play drive, both other drives “work in concert”: they are “directed toward annulling time within time, reconciling becoming with absolute being and change with identity” (NA XX, 353/E 126). In holding the first two drives in harmony, the play drive frees humans of the domination of each: