 Finally, Foucault argues that some philosophers (Hegel and Marx in one way, Nietzsche and Heidegger in another) have tried to resolve the problem of man’s dual status by treating him as a historical reality. But this move encounters the difficulty that man has to be both a product of historical processes and the origin of history. If we treat man as a product of history, we find ourselves reducing his reality to something external to him (this is what Foucault calls the “retreat” from man’s origin). But if we insist on a “return” to man as his own proper origin, then we can no longer make sense of his place in the empirical world. This paradox may explain the endless modern obsession with origins, but there is never any way out of the contradiction between man as originator and man as originated. Nonetheless, Foucault thinks that the modern pursuit of the question of origins has provided us with a deeper sense of the ontological significance of time, particularly in the thought of Nietzsche and Heidegger, who reject Hegel’s and Marx’s view of the return to our origin as a redemptive fullness of being, and instead see it as a confrontation with the nothingness of our existence (1966 [1970: 334).