Contra Descartes and Kant, the cogito cannot be aware of anything let alone itself without the recognition of its own existence in the gaze of the other. “I cannot obtain any truth
The laws that govern behaviour are not determined a priori, but rather by convention.
Sartre, for an existential judgement is not a value judgement but a judgement of logic, in that a person’s choice of ends is based on an erroneous concept of freedom
The question is one of truth (freedom) or error (bad faith) not right or wrong, good or bad. “One can judge a man by saying that he deceives himself...By taking refuge behind some excuse of the passions, or by inventing some deterministic doctrine.”