In the beginning their was only Chaos.  Chaos was a dark and silent existence.  After Chaos Gaea the earth came into existence.  Gaea was to become the immortal loving mother of the gods and humanity.

Gaea had a son who was named Uranus.  Uranus who was heaven covered the entire world with his form.  Gaea and Uranus  had many children bringing forth more immortal gods.  These gods were the Titans, the Cyclops, and the hundred hands.  

Uranus feared his children as he believed that one day they would attempt to take his throne.  Every time Gaea would have a child Uranus would take it and bury it in the depths of Gaea, the earth.

The Titan Cronus

Geae wept for her children and where they had been placed.  Gaea decided that she had to revenge the cruelty that Uranus had perpetrated on their children.  One night as Uranus was sleeping low upon Gaea, Gaea took her son Cronos out from her depths.  Gaea gave Cronus a sickle and told Cronus to wound his father with it.

The great Titan Cronus arose from his mother without fear, attacking Uranus Cronus wounded him with the sickle.  The god Uranus wounded by his son poured out great amounts of blood from his wound.  The god became so weakened that he rose high above the earth,  never  to reach low onto Gaea (the earth), again.

As the blood of Uranus fell onto the earth and mixed with the soil it brought forth the Giants, the Nymphs, and the Nereids.  At this time the waves lapped over Gaea creating froth as one drop of Uranus's blood mixed with the  froth the goddess Aphrodite was born and came into existence. 

The god Cronus then became ruler and god of the entire world.