“Freud’s entire theory regarding human psyche and nature is based upon the hedonistic principle where superego plays an important role whereas Socrates and Plato believe that man is a rational being and because of this, reason plays the most important part in developing his nature and assisting him in discovering the highest good or finally attaining self-fulfillment. Though Freud believes that man operates on the pleasure principle, he asserts this principle does not allow any relevant space to super-ego. In Freud’s three-part model of the mind, the superego assumes the role of conscience, acting as an internal monitor over the actions of the ego. However the role of super-ego as a conscience is limited to its role as a source of guilt. Freud believes that man is not driven by reason but by the super-ego’s role as a source of guilt. He asserts that man is only restrained from doing any harm to fellow beings because of the presence of super-ego which is both a conscience and a source of guilt. Since presence of superego will make a man feel guilty in event of a wrong action, Freud believes that this guilt is the primary restraint in human psyche, provided by superego and not reason.”