Prometheus appealed to Zeus to allow the mortals to give only a portion of the animal to the gods and to keep the rest for themselves. This was not made any easier by Zeus, who insisted that mortal men sacrifice to the gods frequently and give the entire animal to the gods. The world was not a kind place, though, as it was filled with beasts and getting enough food to stay alive was a difficult task. He made only men-no women-and let them loose to live in the world. Prometheus was considered the father of mankind because he created them from clay. Because of this, Prometheus and Epimetheus did not suffer the same fate as Iapetus and Atlas. Prometheus and Epimetheus sided with Zeus and the other Olympians against the Titans and their brother and father because Prometheus could foresee the outcome of the conflict. Prometheus (Forethought) was the son of the Titan Iapetus and was brother to the Titans Epimetheus (Afterthought) and Atlas.