How can another see into me, into my most secret self, without my being able to see in there myself and without my being able to see him in me? And if my secret self, that which can be revealed only to the other, to the wholly other, to God if you wish, is a secret that I will never reflect on, that I will never know or experience or possess as my own, then what sense is there in saying that it is "my" secret, or in saying more generally that a secret belongs, that it is proper to or belongs to some "one," or to some other who remains someone? It is perhaps there that we find the secret of secrecy, namely, that it is not a matter of knowing and that it is there for no-one. A secret doesn't belong, it can never be said to be at home or in its place [chez soi]...The question of the self: "who am I?" not in the sense of "who am I" but "who is this 'I'" that can say "who"? What is the "I," and what becomes of responsibility once the identity of the "I" trembles in secret?
(Derrida, The Gift of Death, 92)