The lineage of Theseus, by his father's side, ascends as high as to Erectheus and the first inhabitants of Attica. By his mother's side he was descended of Pelops. For Pelops was the most powerful of all the kings of Peloponnesus, not so much by the greatness of his riches as the multitude of his children, having married many daughters to chief men, and put many sons in places of command in the towns round about him. One of whom named Pittheus, grandfather to Theseus, was governor of the small city of the Troezenians and had the repute of a man of the greatest knowledge and wisdom of his time; which then, it seems, consisted chiefly in grave maxims, such as the poet Hesiod got his great fame by, in his book of Works and Days. And, indeed, among these is one that they ascribe to Pittheus,-"Unto a friend suffice A stipulated price;"which, also, Aristotle mentions. And Euripides, by calling Hippolytus "scholar of the holy Pittheus," shows the opinion that the world had of him. Aegeus, being desirous of children, and consulting the oracle of Delphi, received the celebrated answer which forbade him the company of any woman before his return to Athens. But the oracle being so obscure as not to satisfy him that he was clearly forbid this, he went to Troezen, and communicated to Pittheus the voice of the god, which was in this manner,-"Loose not the wine-skin foot, thou chief of men, Until to Athens thou art come again."Pittheus, therefore, taking advantage from the obscurity of the oracle, prevailed upon him, it is uncertain whether by persuasion or deceit, to lie with his daughter Aethra. Aegeus afterwards, knowing her whom he had lain with to be Pittheus's daughter, and suspecting her to be with child by him, left a sword and a pair of shoes, hiding them under a great stone that had a hollow in it exactly fitting them; and went away making her only privy to it, and commanding her, if she brought forth a son who, when he came to man's estate, should be able to lift up the stone and take away what he had left there, she should send him way to him with those things with all secrecy, and with injunctions to him as much as possible to conceal his journey from every one; for he greatly feared the Pallantidae, who were continually mutinying against him, and despised him for his want of children, they themselves being fifty brothers, all sons of Pallas.
When Aethra was delivered of a son, some say that he was immediately named Theseus, from the tokens which his father had put under the stone; others that he had received his name afterwards at Athens, when Aegeus acknowledged him for his son. He was brought up under his grandfather Pittheus, and had a tutor and attendant set over him named Connidas, to whom the Athenians even to this time, the day before the feast that is dedicated to Theseus, sacrifice a ram, giving this honour to his memory upon much juster grounds than to Silanio and Parrhasius for making, pictures and statues of Theseus. There being then a custom for the Grecian youth, upon their first coming to man's estate, to go to Delphi and offer first-fruits of their hair to the god, Theseus also went thither, and a place there to this day is yet named Thesea, as it is said, from him. He clipped only the fore part of his head, as Homer says the Abantes did. And this sort of tonsure was from him named Theseus. The Abantes first used it, not in imitation of the Arabians, as some imagine, nor of the Mysians, but because they were a warlike people, and used to close fighting, and above all other nations accustomed to engage hand to hand; as Archilochus testifies in these verses:-"Slings shall not whirl, nor many arrows fly, When on the plain the battle joins; but swords, Man against man, the deadly conflict try As is the practice of Euboea's lords Skilled with the spear.-"Therefore that they might not give their enemies a hold by their hair, they cut it in this manner. They write also that this was the reason why Alexander gave command to his captains that all the beards of the Macedonians should be shaved, as being the readiest hold for an enemy.
Aethra for some time concealed the true parentage of Theseus, and a report was given out by Pittheus that he was begotten by Neptune;for the Troezenians pay Neptune the highest veneration. He is their tutelar god; to him they offer all their first-fruits, and in his honour 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 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.