In An Outline of Psychoanalysis, Freud (1949) explains the general principles on which the psychoanalysis theory is based upon. Freud started off with an explanation of three forces of the psychical apparatus. The three are the id, ego, and superego. The id has unconscious quality that contains everything that were inherited and that were present at birth, and the instincts (Freud, 1949 p.14). The ego has the ability of conscious quality and is responsible for controlling the demands of the id and instincts, and serves as a link between the id and the external life. The ego responds to stimulation by either adaptation or flight, regulates activity, and tries to achieve pleasure and avoid the unpleasurable aspects of life (Freud, p. 14-15). The superego, is responsible for the satisfactions and represented by the influence of others (Freud, 1949, p.15) The superego’s demands are managed by the id.Freud explains that our instincts are the ultimate cause of every behavior. There are two basic instincts the Eros (love) and the Thanatos (death). The Eros instincts purpose according to Freud was to establish and preserve unity between relationships. Thanatos is completely the opposite, the purpose is to undo connections and unity by destroying them (Freud, 1949, p.19). These two instincts either operate against one another through repulsion or combine and work together via attraction.