The philosophical foundation of humanistic psychology must be examined. In explicitly stating its postulates it may remain in the Kantian spell, but, in trying to overcome the dichotomy of phenomena and noumena, belong to the Romantic tradition. Further, it is also conscious of its humanistic tradition in historical diversity. The inquiry into the distinction of humans from other beings, especially computers, will lead to a more fundamental anthropological and ontological question. Needed is also the sensitivity to differences within and exclusions from the unitary concept of human being. While not necessary to change the basic postulates, it may be worthwhile to make them more dynamic and less one-sided by integrating their opposites or negative aspects. The uniqueness of humanistic psychology consists in the quest for the identity of human being.