Being comes to expression in Being and Time primarily as the being of Dasein and secondly as the being of entities. However, in the concept of Dasein and therefore with the very existence of Dasein, the being of entities is always already presupposed. The later Heidegger starts to interpret entities and being from Being itself. Being itself, in its own temporal and historical character, is now understood by Heidegger as the "appropriating event".