Departing from Heidegger’s “most thought-provoking thing in our time”, this essay tries to clarify what “differance” may signify for a thought that takes seriously the question of its own temporality. A phrase of Kant’s Opus postumum, adopted by critics only in the twentieth century, will be chosen as a guideline to this essay. This paper reveals the relationship between Kant’s thesis of the primacy of pure practical reason and the “time as being” of Rosenzweig, Lévinas and Derrida; and also, what might be the meaning and importance of a “difference of salvation” for us today.

Keywords: Urdifferenz; Phenomenology; New Thought; Thinking; Speaking; Listening; Soteriological Difference.