Another deed of Theseus was in Crete.  The great white bull which Minos ought to have sacrificed had left a horrible offspring, a monster called the Minotaur, half man and half bull, which ate human flesh, and did horrible harm, till a clever artificer named Dædalus made a dwelling for it called the Labyrinth, approached by so many cross paths, winding in and out in a maze, that everyone who entered it was sure to lose himself; and the Minotaur could never get out, but still they fed him there; and as Athens was subject to Crete, the people were required to send every year a tribute of seven youths and seven maidens for the Minotaur to devour.  Theseus offered himself to be one of these, telling his father that whereas a black sail was always carried by the ship that bore these victims to their death, he would, if he succeeded in killing the Minotaur, as he hoped to do, hoist a white one when coming home.  When he reached Crete, he won the heart of Minos’ daughter Ariadne, who gave him a skein of thread: by unwinding this as he went he would leave a clue behind him, by which he could find his way out of the labyrinth, after killing the monster.  When this was done, by his great skill and strength, he took ship again, and Ariadne came with him; but he grew tired of her, and left her behind in the isle of Naxos, where Bacchus found her weeping, consoled her, and gave her a starry crown, which may be seen in the sky on a summer night.  Theseus, meantime, went back to Athens, but he had forgotten his promise about the white sail, and his poor old father, seeing the black one, as he sat watching on the rocks, thought that ill news was coming, fell down, and was drowned, just as Theseus sailed safely into port.  Theseus was a friend of Hercules, had been with him on his journey to the land of the Amazons, and had married one of them named Antiope.