There was Cassiopaeia, queen of Aethiopia, who boasted that her beauty outshone the beauty of all the sea-nymphs so that in anger they sent a horrible sea-serpent to ravage the coast. The king prayed of an oracle to know how the monster might be appeased and learned that he must offer up his own daughter, Andromeda. The maiden was therefore chained to a rock by the sea-side and left to her fate. But who should come to rescue her but a certain young hero, Perseus, who was hastening homeward after a perilous adventure with the snaky-haired Gorgons. Filled with pity at the story of Andromeda, he waited for the dragon, met and slew him, and set the maiden free. As for the boastful queen, the Gods forgave her, and at her death, she was set among the stars. That story ended well.
But there was once a queen of Thebes, Niobe, fortunate above all women, and yet arrogant in the face of the gods. Very beautiful she was and nobly born, but above all things, she boasted of her children, for she had seven sons and seven daughters.
Now there came the day when the people were wont to celebrate the feast of Latona, mother of Apollo and Diana; and Niobe, as she stood looking upon the worshipers on their way to the temple, was filled with overweening pride.
“Why do you worship Latona before me?” she cried out. “What does she possess that I have not in greater abundance? She has but two children, while I have seven sons and as many daughters. Nay, if she robbed me out of envy, I should still be rich. Go back to your houses; you have not eyed to know the rightful goddess.”
Such impiety was enough to frighten anyone, and her subjects returned to their daily work, awestruck and silent.
But Apollo and Diana were filled with wrath at this insult to their divine mother. Not only was she a great goddess and a power in the heavens, but during her life on earth, she had suffered many hardships for their sake. The serpent Python had been sent to torment her; and, driven from land to land, under an evil spell, beset with dangers, she had found no resting-place but the island of Delos, held sacred ever after to her and her children. Once she had even been refused water by some churlish peasants, who could not believe in a goddess if she appeared in humble guise and travel-worn. But these men were all changed into frogs.
It needed no word from Latona herself to rouse her children to vengeance. Swift as a thought, the two immortal archers, brother, and sister, stood in Thebes, upon the towers of the citadel. Nearby, the youth was pursuing their sports, while the feast of Latona went neglected. The sons of Queen Niobe were there, and against them, Apollo bent his golden bow. An arrow crossed the air like a sunbeam, and without a word, the eldest prince fell from his horse. One by one his brothers died by the same hand, so swiftly that they knew not what had befallen them, till all the sons of the royal house lay slain.
Only the people of Thebes, stricken with terror, bore the news to Queen Niobe, where she sat with her seven daughters. She would not believe in such sorrow.
“Savage Latona,” she cried, lifting her arms against the heavens, “never think that you have conquered. I am still greater.”
At that moment one of her daughters sank beside her. Diana had sped an arrow from her bow that is like the crescent moon. Without a cry, nay, even as they murmured words of comfort, the sisters died, one by one. It was all as swift and soundless as snowfall.
Only the guilty mother was left, transfixed with grief. Tears flowed from her eyes, but she spoke not a word, her heart never softened, and at last, she turned to stone, and the tears flowed down her cold face forever.