One secret hardened his spirit. He was sure that the empire of Zeus must fall some day, since he knew of a danger that threatened it. For there was a certain beautiful sea-nymph, Thetis, whom Zeus desired for his wife. (This was before his marriage to Queen Juno.) Prometheus alone knew that Thetis was destined to have a son who should be far greater than his father. If she married some mortal, then, the prophecy was not so wonderful; but if she were to marry the King of gods and men, and her son should be greater than he, there could be no safety for the kingdom. This knowledge Prometheus kept securely hidden; but he ever defied Zeus, and vexed him with dark sayings about a danger that threatened his sovereignty. No torment could wring the secret from him. Year after year, lashed by the storms and scorched by the heat of the sun, he hung in chains and the vulture tore his vitals, while the young Oceanides wept at his feet, and men sorrowed over the doom of their protector.
At last that earlier enmity between the gods and the Titans came to an end. The banished rebels were set free from Tartarus, and they themselves came and besought their brother, Prometheus, to hear the terms of Zeus. For the King of gods and men had promised to pardon his enemy, if he would only reveal this one troublous secret.
In all heaven and earth there was but one thing that marred the new harmony,—this long struggle between Zeus and Prometheus; and the Titan relented. He spoke the prophecy, warned Zeus not to marry Thetis, and the two were reconciled. The hero Heracles (himself an earthly son of Zeus) slew the vulture and set Prometheus free.
But it was still needful that a life should be given to expiate that ancient sin,—the theft of fire. It happened that Chiron, noblest of all the Centaurs (who are half horses and half men), was wandering the world in agony from a wound that he had received by strange mischance. For, at a certain wedding-feast among the Lapithae of Thessaly, one of the turbulent Centaurs had attempted to steal away the bride. A fierce struggle followed, and in the general confusion, Chiron, blameless as he was, had been wounded by a poisoned arrow. Ever tormented with the hurt and never to be healed, the immortal Centaur longed for death, and begged that he might be accepted as an atonement for Prometheus. The gods heard his prayer and took away his pain and his immortality. He died like any wearied man, and Zeus set him as a shining archer among the stars.
So ended a long feud. From the day of Prometheus, men spent their lives in ceaseless enterprise, forced to take heed for food and raiment, since they knew how, and to ply their tasks of art and handicraft, They had taken unresting toil upon them, but they had a wondrous servant at their beck and call,—the bright-eyed fire that is the treasure of the gods.
THE DELUGE.
Even with the gifts of Prometheus, men could not rest content. As years went by, they lost all the innocence of the early world; they grew more and more covetous and evil-hearted. Not satisfied with the fruits of the Earth, or with the fair work of their own hands, they delved in the ground after gold and jewels; and for the sake of treasure nations made war upon each other and hate sprang up in households. Murder and theft broke loose and left nothing sacred.
At last Zeus spoke. Calling the gods together, he said: "Ye see what the Earth has become through the baseness of men. Once they were deserving of our protection; now they even neglect to ask it. I will destroy them with my thunderbolts and make a new race."