The book addresses existential and humanistic psychology and the theory of Erich Fromm, humanistic psychoanalysis. Fromm is of the belief for man to be pulled from his or her evolutionary union from each other, yet despite this continue to consist of the power of reason. To Fromm, basic anxiety is a function of loneliness and isolation. Fromm, one may not only view as a theorist, but also psychobiographer, cultural anthropologist, biblical scholar, philosopher, psychotherapist, and social critic. Fromm finds with evolution, for mankind to separate him or herself from his or her animal instincts as a trade-off for a more complex and developed brain. This book accentuates the continued relevancy and validity of Erich Fromm's humanistic psychoanalysis within modern practice and research. It is the character orientations and existential needs existing within the theory of Fromm, which are of utility in diagnosing and treating complex personality disorders such as necrophilia, malignant narcissism, and incestuous symbiosis. The cross-cultural aspect of Fromm's theory involves the separation from one another of which Fromm places much of the basis to his humanistic psychoanalysis. The book attempts to demonstrate the importance of humanistic psychoanalysis within personality psychology as an explanation for complex personality disorders. In addition to providing an in-depth summary of Fromm and his theory is the incorporation of research to support the hypothesis of the author.