reﬂection, I abolish this distance, I prove by that very token that I am capable of knowing what I was perceiving, I control in practice the discontinuity of the two selves, and it would seem that, in the last resort, the significance of the cogito lies not in revealing a universal constituting force or in reducing perception to intellection, but in establishing the fact of reﬂection which both pierces and sustains the opacity of perception.