Consciousness Is Nothingness

Sartre: Consciousness is the source of all nothingness in our experience of the world. To be able to see this lack or or negation, or nothingness of non pierre and the bar, we get that from consciousness. These sort of negative facts, as they're called, deeply worried people like parmenides. But for sartra, one thing's for certain about that scenario, this awareness of what is not, didn't come from being in itself.