How do we know our mental life, and how is our mental life altered by our efforts to know it better? Originally published in 1984, this title attempts an epistemological and ontological discourse concerning the understanding of human mental processes, and it aims toward a definitive thesis on the dialectics of knowing and being in this work of psychological understanding. What this work reconfronts are questions pertaining to all psychology and to all human sciences. Yet much of its focus is on the understanding of unconscious mental contents, on the question of knowing and being in Freud’s psychology.