The essential consequence of our earlier remarks is that man being condemned to be free carries the weight of the whole world on his shoulders; he is responsible for the world and for himself as a way of being.
the Philosophy Of Existentialism: Selected Essaysby jean-paul Sartre
If values are vague, and if they are always too broad for the concrete and specific case that we are considering, the only thing left for us is to trust our instincts.
A search for justification and the impossibility of justification are recurrent motifs in the philosophy of Sartre. His philosophy is one of the incarnations of problematism and of the ambiguity of contemporary thought (for Man does seem, to the contemporary mind, to be ambiguous).
In the second place, could we not conceive of a philosophy of existence linked, not solely to experiences of separation, forlornness, and profound melancholy, but also to feelings of hope and confidence?
confidence / existence / Hope
Thirdly, the existent individual is impassioned, impassioned with a passionate thought; he is inspired; he is a kind of incarnation of the infinite in the finite. This passion which animates the existent (and this brings us to the fourth characteristic) is what Kierkegaard calls “the passion of freedom.”