So Cadmus obeyed the command. He pulled out the serpent's triple row of sharply pointed teeth. He made a furrow and planted them in it, and scarcely had he covered them with earth than the clods raised themselves. As happened in the days when Jason had traveled all the long way in search of the fleece of gold, the ground where the dragon's teeth had taken root was pierced by the metal points of helmets and spears. After these sprouting signs of war came the heads and breasts of an army of warriors until the entire plain was bright with their shields and the air smoked and resounded with the din of fearful fighting. Cadmus was only one against the terrible ranks of all these earth-born brothers of his, but he made ready to do his best and encounter this new enemy. As he advanced, however, he heard the unknown voice again, "Meddle not with civil war, Cadmus," it said. But Cadmus' spirit was fired with his high desire to build a city which would be a place of peace and industry, and he knew that civil strife was the destruction of such a city. So he entered the battle, single handed, and smote one of these, his fighting brothers, with a sword, but fell, pierced in his side by an arrow. He was up and advancing again as soon as he staunched the flow of blood, killing four of the warriors. In the meantime the warriors seemed to become mad with the spirit of warfare and killed each other until the whole crowd was pitted against one another. At last all of the warriors fell, mortally wounded, except five. These five survivors threw aside their weapons and cried, as with one voice, "Brothers, let us live in peace." And they joined with Cadmus in laying the foundations of a great city which they called Thebes. They measured and laid out roads, making them hard and strong for the wheels of heavy chariots which would bear kings to and from the city. They built houses whose decorations of carvings and precious metals were not to be equalled in all Greece, and they filled them with rare furnishings, and they painted pictures of the contests of the gods on the walls, and shaped golden plates and cups for the tables. They set up a strong citadel at the boundary line of the city to protect it from invasion, and Cadmus built factories for making tools and furniture and household utensils so as to draw traders to the city and increase its prosperity through commerce. And there were seven gates to Thebes, in honor of the seven strings of Apollo's lyre from which he drew the sweet strains that brought harmony to the earth. When Thebes was finished, it seemed as if it had no rival among the cities of the earth, it was so good to look upon, so full of industry, and peace, and plenty. But Cadmus had yet one gift more to make to Thebes.