A sympathetic and systematic reconstruction of Sartre's philosophy, explaining its relation to other major philosophical theories. Among the themes elucidated are the relation between reality and our representation of it; the parities between language and consciousness; the relationship between the world as it may be and as we structure it in our interventions as engaged beings; the conceptual interdependence of the self and others; and the connections between factual beliefs and systems of value. --Adapted from book jacket.