Whatever inconsistencies may exist in his philosophical oeuvre, Sartre’s commitment to the social and political battles he viewed as most important in his day was always impassioned and unwavering. As he expresses time and again in his philosophy, Sartre believed above all else in the innate freedom of humanity. Critique of Dialectical Reason is the work in which Sartre most thoroughly articulates how his philosophy, if at times abstract, is directed toward concrete change in the empirical, lived reality of individuals and societies.