Thus, by rediscovering finitude in its interrogation of the origin, modern thought closes the great quadrilateral it began to outline when the Western episteme broke up at the end of the eighteenth century: the connection of the positivities with finitude, the reduplication of the empirical and the transcendental, the perpetual relation of the cogito to the unthought, the retreat and return of the origin, define for us man's mode of being.