At the end of Being and Nothingness Sartre made the curious claim that his ethical views follow from his ontology and are based on it. Yiwei Zheng argues that there are unbridgeable gaps between Sartre's ontology and ethics that cannot be filled in, and in the process provides a careful study of some notoriously murky notions in Sartre's early philosophy. Calling into question much of what has passed as received wisdom in Sartrean studies, Ontology and Ethics in Sartre's Early Philosophy offers fresh insights to scholars of philosophy, ethics, and Sartre.