Moses and Monotheism, Freud's last masterpiece, can be studied as a piece of his heroic self-analysis that lasted till the end of his life. Insurmountable blind spots that determined the conclusions Freud arrived at, notably in relation to the absence of the mother figure in his conceptions on monotheism, are pointed out. Unresolved conflicts evidenced in Freud's creative process influence various aspects of psychoanalytic theory.