Human beings are naturally, unpremeditatedly, in conflict with nature their natural powers make it possible for them, with effort, to oppose natural tendencies, creating a special human standing of their own. Thus we are related to our food not only as food, but as an object in itself. We are potentially related to all things as objects to grasp or feel. This creates a theoretical relationship between human and other objects. Practically, due to their structure, the arm and hand become tools new kinds of practical world-relations come into existence.
Truth becomes a human goal in addition to nourishment.
Falsity and error become a possibility. We become a questioning animal. Self-consciousness turns our selves into objects to be known we create a relationship with ourselves. If everything is a possible object to eat, to grasp, to know, then nothing is peculiarly ours. The human being has no purpose because it can have any purpose.