Abstract

Historizing is the way Dasein takes up possibilities and roles to project itself into the future. It is why we experience continuity throughout our lives, and it is the basis for historicality – our sense of a more general continuity of “history.” In Being and Time,Heidegger identifies both inauthentic and authentic modes of historizing that give rise, respectively, to inauthentic and authentic modes of histori-cality. He focuses on historizing at the individual level but gestures at a communal form of historizing. In this paper, I develop the concept of co-historizing in both its authentic and inauthentic modes. I argue that Heidegger’s unarticulated concept of inauthentic co-historizing is what necessitated the planned (but unfinished) second half of Being and Time – the “phenomenological destruction of the history of ontol-ogy.” I consider what it means to take responsibility for our destiny as a people and specifically as a community of philosophers.