Nature was a sphinx - nursing and devouring, and giving kaznyaschim, born and killing. The man is still only listened to her, vaguely guessing her holy will, from which he did not dare go out. Thousands taboo guarded secret. But the mind is slowly getting stronger, it entered into force - and finally the man, growing up, rebelling against the old myths, cradled consciousness. Man feels more firmly on its own feet and wants to try to force nature. Reason is opposed to the sphinx. Own mind, will, and one begins to see the hand as something great and mighty, he deifies them create humanoid gods. These gods overturned earlier bans and ordered to dare - to break into the bowels of the earth, to subdue nature itself.