The face is signification, and signification without context...the face is meaning all by itself. You are you. In this sense one can say that the face is not "seen." It is what CANNOT BECOME A CONTENT, WHICH YOUR THOUGHT WOULD EMBRACE; it is uncontainable, it leads you beyond. It is in this that the signification of the face makes it escape from being, as a correlate of a knowing. Vision, to the contrary, is a search for adequation; it is what par excellence absorbs being.
But the relation to the face is STRAIGHTAWAY ETHICAL. The face is what one cannot kill, or at least it is that whose meaning consists in saying: "though shalt not kill." Murder, it is true, is a banal fact: one can kill the Other; the ethical exigency is not an ontological necessity. The prohibition against killing does not render murder impossible, even if the authority of the prohibition is maintained in the bad conscience about the accomplished evil - the malignancy of evil. It also appears in the Scriptures, to which the humanity of man is exposed inasmuch as it is engaged in the world. But to speak truly, the appearance of being of these ethical peculiarities - the humanity of man - is a rupture of being. It is significant, even if being resumes and recovers itself.