The author analyses the contribution of Freud's libido theory for the elucidation of certain basic psychopathologic problems. After mentioning the dissident ideas of Adler and Jung, he studies the contribution of the neo-psychoanalysts with cultural orientation (Horney, Fromm, Kardiner, Sullivan) referring their fundamental point of view: the predominance of sociocultural factors and devaluation of the biological ones in the development of normal and abnormal personality, especially on social-psychologic and cultural-anthropologic principles. Considering these biological and sociocultural aspects as convergents and not as opposites the author concludes that the instinctive level of the personality is very important, but not sufficient to explain all the psychodynamic problems of the personality.