Moi, je ne tiens pas les rancunes et j'avoue tout, complaisamment : pour l'autocritique, je suis doué, à la condition qu'on ne prétende pas me l'impo… - Jean-Paul Sartre

It is the reflection of my face. Often in these lost days I study it. I can understand nothing of this face. The faces of others have some sense, some direction. Not mine. I cannot even decide whether it is handsome or ugly. I think it is ugly because I have been told so. But it doesn't strike me. At heart, I am even shocked that anyone can attribute qualities of this kind to it, as if you called a clod of earth or a block of stone beautiful or ugly.

One can ask why the I has to appear in the cogito {Descartes’ argument “I think therefore I am.}, since the cogito, if used rightly, is the awareness of pure consciousness, not directed at any fact or action. In fact the I is not necessary here, since it is never united directly to consciousness. One can even imagine a pure and self-aware consciousness which thinks of itself as impersonal spontaneity.

What is meant here by saying that existence precedes essence? It means first of all, man exists, turns up, appears on the scene, and, only afterwards, defines himself. If man, as the existentialist conceives him, is indefinable, it is because at first he is nothing. Only afterward will he be something, and he himself will have made what he will be.