during the course of our own lives, but passed on through our common evolutionary history to all members of our species. There are shared, fundamental elements that make up the Collective Unconscious and generate a limiting framework around which our psychic material organizes. He referred to those as Archetypes. Archetypes are the fundamental elements of the collective unconscious. Jung, states that every human being is born with a psyche that expects to engage, influence, and to undergo certain life milestones. For instance, our psyches have evolved to expect us to be born, to expect us to have parents, to expect us to encounter particular types of other people and creatures with which we share the earth, to expect us to have children, and to expect us to eventually die. These fundamental psychological expectations have become embodied, Jung claimed, in a common set of basic tendencies in the unconscious that predispose us to generate particular ideas, concepts and imagery related to them. These tendencies are the Archetypes. Foundations of Personality Freud and Roger's theory of personality are based on some very different assumptions. Their concept of human nature and the role of rationality in human motivation are diametrically opposed. Although both theories include a hidden personality, both concepts are very different in that for Freud it is our natural state, while for Rogers it is the self-created by the demands of society. Human Nature Freud theorised that people have an unconscious mind that would, if permitted, manifest itself in incest, murder and other activities which are considered crimes in contemporary society. Freud believes that neuroticism is a result of tensions caused by suppression of our unconscious drives, which are fundamentally aggressive towards others. Rogers agrees that we may behave aggressive and violent at times, but at such times we are neurotic and are not functioning as fully developed human beings. Rogers reverses Freud's concept of neuroticism and thinks that what Freud has construed as our natural state of being is actually unnatural and unhealthy behaviour. For Rogers, the core of our nature is essentially positive and aligned towards self-actualisation, while for Freud, we solely are driven by sexual and aggressive instincts. Recent research support Rogers' point of view as it has shown that people with an optimistic style of thought tend to cope more effectively with stress than do people who have a pessimistic style. Reason in Human Behaviour Revolutions in