Aethra for some time concealed the true parentage of Theseus, and a report was given out by Pittheus that he was the son of Neptune;for the Troezenians pay Neptune the highest veneration. He is their tutelar god, to him they offer all their firstfruits, and in his honor stamp their money with a trident.
Theseus displaying not only great strength of body, but equal bravery, and a quickness alike and force of understanding, his mother Aethra, conducting him to the stone, and informing him who was his true father, commanded him to take from thence the tokens that Aegeus had left, and to sail to Athens. He without any difficulty set himself to the stone and lifted it up; but refused to take his journey by sea, though it was much the safer way, and though his mother and grandfather begged him to do so. For it was at that time very dangerous to go by land on the road to Athens, no part of it being free from robbers and murderers. That age produced a sort of men, in force of hand, and swiftness of foot, and strength of body, excelling the ordinary rate, and wholly incapable of fatigue; making use, however, of these gifts of nature to no good or profitable purpose for mankind, but rejoicing and priding themselves in insolence, and taking the benefit of their superior strength in the exercise of inhumanity and cruelty, and in seizing, forcing, and committing all manner of outrages upon everything that fell into their hands; all respect for others, all justice, they thought, all equity and humanity, though naturally lauded by common people, either out of want of courage to commit injuries or fear to receive them, yet no way concerned those who were strong enough to win for themselves. Some of these Hercules destroyed and cut off in his passage through these countries, but some, escaping his notice, while he was passing by, fled and hid themselves, or else were spared by him in contempt of their abject submission; and after that Hercules fell into misfortune, and, having slain Iphitus, retired to Lydia, and for a long time was there slave to Omphale, a punishment which he had imposed upon himself for the murder. Then, indeed, Lydia enjoyed high peace and security, but in Greece and the countries about it the like villainies again revived and broke out, there being none to repress or chastise them. It was therefore a very hazardous journey to travel by land from Athens to Peloponnesus; and Pittheus, giving him an exact account of each of these robbers and villains, their strength, and the cruelty they used to all strangers, tried to persuade Theseus to go by sea. But he, it seems, had long since been secretly fired by the glory of Hercules, held him in the highest estimation, and was never more satisfied than in listening to any that gave an account of him;especially those that had seen him, or had been present at any action or saying of his. So that he was altogether in the same state of feeling as, in after ages, Themistocles was, when he said that he could not sleep for the trophy of Miltiades; entertaining such admiration for the virtues of Hercules that in his dreams were all of that hero's actions, and in the day a continual emulation stirred him up to perform the like. Besides, they were related, being born of own cousins. For Aethra was daughter of Pittheus, and Alcmena of Lysidice; and Lysidice and Pittheus were brother and sister, children of Hippodamia and Pelpos. He thought it therefore a dishonorable thing, and not to be endured, that Hercules should go out everywhere, and purge both land and sea from the wicked men, and he should fly from the like adventures that actually came his way; not showing his true father as good evidence of the greatness of his birth by noble and worthy actions, as by the tokens that he brought with him, the shoes and the sword.
With this mind and these thoughts, he set forward with a design to do injury to nobody, but to repel and avenge himself of all those that should offer any. And first of all, in a set combat he slew Periphtes, in the neighborhood of Epidaurus, who used a club for his arms, and from thence had the name of Corynetes, or the club-bearer; who seized upon him, and forbade him to go forward in his journey. Being pleased with the club, he took it, and made it his weapon, continuing to use it as Hercules did the lion's skin, on whose shoulders that served to prove how huge a beast he had killed; and to the same end Theseus carried about him this club;overcome indeed by him, but now, in his hands, invincible.
Passing on further towards the Isthmus of Peloponnesus, he slew Sinnis, often surnamed the Bender of Pines, after the same manner in which he himself had destroyed many others before. And this he did without having either practiced or ever learnt the art of bending these trees, to show that natural strength is above all art. This Sinnis had a daughter of remarkable beauty and stature, called Perigune, who, when her father was killed, fled, and was sought after everywhere by Theseus; and coming into a place overgrown with brushwood, shrubs, and asparagus-thorn, there, in a childlike, innocent manner, prayed and begged them, as if they understood her, to give shelter, with vows that if she escaped she would never cut them down nor burn them. But Theseus calling upon her, and giving her his promise that he would use her with respect, and offer no injury, she came forth. Whence it is a family usage amongst the people called Ioxids, from the name of her grandson, Ioxus, both male and female, never to burn either shrubs or asparagus-thorn, but to respect and honor them.
The Crommyonian sow, which they called Phaea, was a savage and formidable wild beast, by no means an enemy to be despised.