Only reading more and later Sartre will disabuse you of your current notions about him and his philosophy. I suggest
Existentialism is a Humanism,
The Age of Reason (and the subsequent two novels in that trilogy), the
Critique of Dialectical Reason supporting the development of "We-subjects" who work together to create a more just world, and
Anti-Semite and Jew along with Sartre's introduction to Franz Fanon's
The Wretched of the Earth, as well as Fanon's work itself, inspired by Sartre
.
Yes, Merleau-Ponty's critique of Sartre was especially far-reaching concerning his early obsession with nothingness. But so what? The major philosophers in phenomenology and existentialism critiqued one another in various aspects of their work, like all the top thinkers in any field do. Many phenomenologists have criticized Heidegger as well. No tin gods there but an intricately reasoned and ultimately coherent effort to think through to the conditions of human existence and the social and personal choices required to redeem it.
You quote this passage:
What's the source of that quote? The later H was trying to overcome all metaphysics and provoke 'the end of philosophy'. If you want to follow him there, Steve can give you a reading list concerning the late Heidegger.
Your current assumptions about Sartre won't enable you to see what he contributed to phenomenology. I mentioned above only the introduction to the first section of B&N (which I cited months ago to Soupie). You can learn much from reading it concerning the meaning of authenticity and the grounds on which it is required of us. It was linked, and a good deal of it copied, here:
Link
? By "two modes of consciousness" are you referring to Sartre's descriptions of authenticity and inauthenticity as representing two reasonable 'threads' operating in some brain system? Sartre speaks of authenticity and inauthenticity as 'original choices' of how one relates to, regards, and treats one fellow humans, and how one takes upon oneself his or her "radical freedom" and the responsibility it lays upon us. Authenticity and inauthenticity are not 'modes of consciousness'. One doesn't change from one to the other as easily as one changes one's shoes. All of that is explicated in
Being and Nothingness.
What gives "far less rise to angst"? Living authentically some days and taking it easier on others?
Btw, Existentialism was not a post-war life style or 'meme' requiring black turtlenecks, cigarettes, absinthe, and 'being cool', though that was the trivial impression of it carried to popular culture in America.
That would be nice. Where will they get their values, and why will they adhere to them?