Only once did the vessel stop on its swift voyage homeward, and this was at the island of Naxos. Here the whole company landed to explore the beauties of the island, and to find some spring from which to get a supply of fresh water. Ariadne wandered apart from the gay company, and being weary, threw herself down on the bank of a stream to rest. Here she fell fast asleep, and when Theseus later found her there, he at once conceived the treacherous idea of deserting her. So he summoned all his companions, and went stealthily down to the ship, where he embarked, leaving Ariadne alone on the island. For some days the deserted maiden sat on the seashore watching in vain for the Athenian ship to return; but she did not mourn her faithless lover long, for the gods sent her a greater happiness than she could ever have had with the fickle Theseus. The island of Naxos was the favorite spot of Bacchus, god of wine, who landed one day with a merry company of followers, and found the weeping Ariadne. In a short time he won her love and confidence, and persuaded her to be his wife. The wedding celebrations so occupied Ariadne's mind that the treacherous Theseus was soon forgotten.[103]

The Athenians had been so eager to return to their native city that they had no thought but to reach home as quickly as the vessel could bear them; and Theseus forgot his promise to his father that, in case of success, white sails should replace the black ones that were hoisted on the outgoing voyage. Old Ægeus went each day to the seashore, and stood on a high rock, watching the sea for some sign of the returning ship. When, at last, he saw it loom up on the horizon, with its black sails showing ominously against the sky, he at once concluded that his son was dead; and in his grief over this great loss he threw himself into the water, which has since been known as the Ægean Sea.

When Theseus entered Athens in triumph, the first news he heard was the tidings of his father's death; and realizing that it had occurred through his forgetfulness, he was filled with remorse. Though this misfortune made him king of Athens, he allowed the city no rejoicings on his accession to the throne; and the power and wealth at his command gave him no happiness, for his conscience still accused him of causing his father's death. He tried to divert his mind by absorbing himself in state duties, but soon found that nothing would bring forgetfulness as long as he stayed in Athens; so he set out again in search of adventures, and led an expedition against the Amazons, who had been harassing his land. After a long and fierce battle he defeated them and took their queen, Antiope, prisoner. The Amazons then attacked Athens, and penetrated into the heart of the city, but were finally driven out. Shortly after this Theseus married the queen, Antiope,[104] and a son was born to them whom the delighted father named Hippolytus. When, later on, the Amazons again made an invasion into the country under the pretext of rescuing their queen, Antiope was killed by an arrow sent at random into the court of the palace.

The next adventure in which Theseus engaged was to lead the Athenian army against Pirithous, king of the Lapithæ, who had been secretly carrying off some of his herds. Full of anger at these continued plunderings, Theseus came suddenly upon the marauders as they were boldly making off with their booty; but as soon as he and Pirithous were brought face to face, they were seized with such an admiration for each other that they had no longer any feelings of enmity. They threw down their weapons, clasped each other's hands, and swore eternal friendship. To prove his devotion to his new friend, Theseus agreed to accompany him to the court of Adrastus, king of Argos, and to be present at the marriage of Pirithous to Hippodamia, the daughter of the king. Many guests came to the wedding, and among them were Hercules and a number of the centaurs. The beauty of the bride so won the admiration of the centaurs that they determined to kidnap her, and a terrible battle ensued between them and the Lapithæ, who were aided by Theseus and Hercules. Finally the centaurs were driven away, but not before many of them had been killed or wounded. The bride who had been the cause of this strenuous fighting did not live long, however, and Pirithous soon found himself like Theseus, a disconsolate widower.

Theseus

Having been so unfortunate in their wives, the two heroes determined not to seek again any king's daughters in marriage, but to choose some one of divine parentage. So Theseus decided upon Helen, the child of Jupiter and Leda[105] whom the ruler of the gods wooed in the form of a snow-white swan. Pirithous's choice fell upon Proserpina, the wife of Pluto. Theseus succeeded in carrying off Helen; but as she was at that time a mere child, he left her in the care of his mother Æthra until she should be old enough for marriage. Meanwhile Helen's twin brothers, Castor and Pollux, having discovered who her abductor was, waited until he was absent on the venture with his friend Pirithous, and then went to the rescue of their sister, whom they took forcibly from Æthra, and carried triumphantly home to Sparta.

Of these twin brothers, Castor was mortal, and some time later was slain in battle. Pollux, who was immortal, then begged Jupiter to let him die also, that he might not be separated from his brother. The ruler of Olympus, touched by this evidence of devotion, allowed Castor to return to life on condition that Pollux would spend half of his time in Hades. Later on both brothers were translated to the heavens, where they form a bright constellation, one of the signs of the Zodiac.[106]

Although Theseus's attempt to win an immortal bride was unsuccessful, the two friends were not discouraged; and the hero accompanied Pirithous to Hades when he made the bold attempt to carry off Proserpina. Pluto, having discovered their intention, was so enraged at the insult that he fastened Theseus to an enchanted rock, and bound Pirithous to the ever-revolving wheel of his father Ixion. When Hercules went down to Hades to ask Pluto's permission to carry the three-headed dog Cerberus to the court of Eurystheus,[107] he freed Theseus from the enchanted rock and thus enabled him to return to Athens.

Though somewhat advanced in years Theseus decided to marry again, and chose as his bride the beautiful Phædra,[108] a younger sister of Ariadne. An embassy was accordingly sent to ask for the maiden's hand in marriage, and later she was brought to Athens; but she was not at all pleased with her elderly husband, and much preferred his handsome young son Hippolytus, whose years were better suited to her own. She tried to persuade Hippolytus to elope with her, and when he indignantly refused to be so disloyal to his father, Phædra's affection for him turned to hate, and she determined to make him pay dearly for thus scorning her love. So she went to the king and told him that Hippolytus was trying to persuade her to desert the husband she adored; and the infatuated Theseus, believing her story, vowed to punish the youth for his treachery. Learning that his son was then driving his chariot along the seashore, the king implored Neptune to avenge his wrongs; and the obliging sea-god sent a huge wave over the chariot, which dashed it against the rocks and threw the lifeless body of Hippolytus on the beach. When Phædra saw what had happened as the result of her false accusations, she was filled with remorse and despair; and after confessing her wickedness to the king, she hung herself. One story relates that Diana, pitying the innocent Hippolytus, restored him to life with the aid of Æsculapius; and, to remove him from the power of his irresponsible father, placed him in the care of the nymph Egeria.