Concerning his voyage into the Euxine Sea, Philochorus and some others write that he made it with Hercules, offering him his service in the war against the Amazons, and had Antiope given him for the reward of his valor; but the greater number, of whom are Pherecides, Hellanicus, and Herodorus, with a navy under his own command, and took the Amazon prisoner—the more probable story, for we do not read that any other, of all those that accompanied him in this action, took any Amazon prisoner. Bion adds, that, to take her, he had to use deceit and fly away; for the Amazons, he says, being naturally lovers of men, were so far from avoiding Theseus when he touched upon their coasts, that they sent him presents to his ship; but he, having invited Antiope, who brought them, to come aboard, immediately set sail and carried her away. An author named Menecrates, that wrote the History of Nicaea in Bithynia, adds, that Theseus, having Antiope aboard his vessel, cruised for some time about those coasts, and that there were in the same ship three young men of Athens, that accompanied him in his voyage, all brothers, whose names were Euneos, Thoas, and Soloon. The last of these fell desperately in love with Antiope; and escaping the notice of the rest, revealed the secret only to one of his most intimate acquaintance, and employed him to disclose his passion to Antiope. She rejected his pretences with a very positive denial, yet treated the matter with much gentleness and discretion, and made no complaint to Theseus of anything that had happened; but Soloon, the thing being desperate, leaped into a river near the seaside and drowned himself. As soon as Theseus was aquainted with his death, and his unhappy love that was the cause of it, he was extremely distressed, and, in the height of his grief, an oracle which he had formerly received at Delphi came into his mind; for he had been commanded by the priestess of Apollo Pythius, that, wherever in a strange land he was most sorrowful and under the greatest affliction, he should build a city there, and leave some of his followers to be governors of the place. For this cause he there founded a city, which he called, from the name of Apollo, Pythopolis, and, in honor of the unfortunate youth, he named the river that runs by it Soloon, and left the two surviving brothers intrusted with the care of the government and laws, joining with them Hermus, one of the nobility of Athens, from whom a place in the city is called the House of Hermus; though by an error in the accent it has been taken for the House of Hermes, or Mercury, and the honor that was designed to the hero, transferred to the god.
This was the origin and cause of the Amazonian invasion of Attica, which would seem to have been no slight or womanish enterprise. For it is impossible that they should have placed their camp in the very city, and joined battle close by the Pnyx and the hill called Museum, unless, having first conquered the country round about, they had thus with impunity advanced to the city. That they made so long a journey by land, and passed the Cimmerian Bosphorus when frozen, as Hellanicus writes, is difficult to be believed. That they encamped all but in the city is certain, and may be sufficiently confirmed by the names that the places thereabout yet retain, and the graves and the monuments of those that fell the battle. Both armies being in sight, there was a long pause and doubt on each side which should give the first onset; at last Theseus, having sacrificed to Fear, in obedience to the command of an oracle he had received, gave them battle, in which action a great number of the Amazons were slain. At length, after four months, a peace was concluded between them by the mediation of Hippolyta (for so this historian calls the Amazon whom Theseus married, and not Antiope), though others write that she was slain with a dart by Molpadia, while fighting by Theseus's side, and that the pillar which stands by the temple of Olympian Earth was erected to her honor. Nor is it to be wondered at, that in events of such antiquity, history should be in disorder. This is as much as is worth telling concerning the Amazons.
The celebrated friendship between Theseus and Pirithous is said to have been begun as follows: The fame of the strength and valor of Theseus being spread through Greece, Pirithous was desirous to make a trial and proof of it himself, and to this end seized a herd of oxen which belonged to Theseus, and was driving them away from Marathon, and, when news was brought that Theseus pursued him in arms, he did not fly, but turned back and went to meet him. But as soon as they had viewed one another, each so admired the gracefulness and beauty, and was seized with such a respect for the courage of the other, that they forgot all thoughts of fighting; and Pirithous, first stretching out his hand to Theseus, bade him be judge in this case himself, and promised to submit willingly to any penalty he should impose. But Theseus not only forgave him all, but entreated him to be his friend and brother in arms; and they ratified their friendship by oaths. After this Pirithous married Deidamia, and invited Theseus to the wedding, entreating him to come and see his country, and make acquaintance with the Lapithae; he had at the same time invited the Centaurs to the feast, who, growing hot with wine and beginning to be insolent and wild, the Lapithae took immediate revenge upon them, slaying many of them upon the place, and afterwards, having overcome them in battle, drove the whole race of them out of their country, Theseus all along taking the part of the Lapithae, and fighting on their side.
Theseus was now fifty years old, as Hellanicus states, when he carried off Helen, who was yet too young to be married. Some writers, to take away this accusation of one of the greatest crimes laid to his charge, say that he did not steal away Helen himself, but that Idas and Lynceus brought her to him, and committed her to his charge, and that, therefore, he refused to restore her at the demand of Castor and Pollux; or, indeed, they say her own father, Tyndarus, had sent her to be kept by him, for fear of Enarophorus, the son of Hippocoon, who would have carried her away by force when she was yet a child. But the most probable account, and that which has witnesses on its side, is this: Theseus and Pirithous went both together to Sparta, and, having seized the young lady as she was dancing in the temple of Diana Orthia, fled away with her. There were presently men in arms sent to pursue, but they followed no farther than to Tegea; and Theseus and Pirithous being now out of danger, having passed through Peloponnesus, made an agreement between themselves, that he to whom the lot should fall should have Helen to his wife, but should be obliged to assist in procuring another for his friend. The lot fell upon Theseus, who conveyed her to Aphidnae, not being yet marriageable, and delivered her to one of his allies, called Aphidnus, and having sent his mother, Aethra, after to take care of her, desired him to keep them so secretly that none might know where they were; which done, to return the same service to his friend Pirithous, he accompanied him in his journey to Epirus, in order to steal away the king of the Molossians' daughter. The king, his own name being Aidoneus, or Pluto, called his wife Proserpina, and his daughter Cora, and a great dog which he kept Cerberus, with whom he ordered all that came as suitors to his daughter to fight, and promised her to him that should overcome the beast. But having been informed that the design of Pirithous and his companion was not to court his daughter, but to force her away, he caused them both to be seized, and threw Pirithous to be torn to pieces by the dog, and put Theseus into prison, and kept him.
About this time Menetheus, the son of Peteus, grandson of Orneus, and great-grandson to Erechtheus, the first man that is recorded to have affected popularity and ingratiated himself with the multitude, stirred up and exasperated the most eminent men of the city, who had long borne a secret grudge to Theseus, conceiving that he had robbed them of their several little kingdoms and lordships, and, having pent them all up in one city, was using them as his subjects and slaves. He put also the meaner people into commotion, telling them, that, deluded with a mere dream of liberty, though indeed they were deprived both of that and their proper homes and religious usages, instead of many good and gracious kings of their own, they had given themselves up to be lorded over by a newcomer and a stranger. Whilst he was thus busied in infecting the minds of the citizens, the war that Castor and Pollux brought against Athens came very opportunity to farther the sedition he had been promoting, and some say that he by his persuasions was wholly the cause of their invading the city. At their first approach they committed no acts of hostility, but peaceably demanded their sister Helen; but the Athenians returning answer that they neither had her nor knew where she was disposed of, they prepared to assault the city, when Academus, having, by whatever means, found it out, disclosed to them that she was secretly kept at Aphidnea. For which reason he was both highly honored during his life by Castor and Pollux, and the Lacedaemonians, when often in after times they made excursions