Try as he would, he had never been able to do it. But on his eighteenth birthday he had scarcely exerted his strength when the might rock yielded, disclosing a hollow beneath, and in the hollow lay a gold-hilted sword and a pair of embroided sandals.
"This sword and these sandals were your father's," Theseus' mother said. "Take them up, for now they are yours." The she told him about her secret marriage to King Aegeus and how on parting from her he had said: "When my son is strong enough to move this stone, give him my sword and my sandals and let him come to Athens and make himself known to me."
Theseus was all on fore to go to Athens. "I will provide you with a vessel and oarsmen." his grandfather King Pittheus said. "For the roads are beset with robbers." "Indeed, I will go by land." Theseus protested. So Theseus left alone by land.