The Phantom Tollbooth, by Norton Juster
"When the two boys grew to young-manhood, the king called them to him and said: 'I am becoming an old man and can no longer go forth to battle. You must take my place and found new cities in the wilderness, for the kingdom of Wisdom must grow.'
"And so they did. One went south to the Foothills of Confusion and built Dictionopolis, the city of words; and one went north to the Mountains of Ignorance and built Digitopolis, the city of numbers. Both cities flourished mightily and the demons were driven back still further. Soon other cities and towns were founded in the new lands, and at last only the farthest reaches of the wilderness remained to these terrible creatures - and there they waited, ready to strike down all who ventured near or relaxed their guard.
"The two brothers were glad, however, to go their separate ways, for they were by nature very suspicious and jealous. Each one tried to outdo the other, and they worked so hard and diligently at it that before long their cities rivaled even Wisdom in size and grandeur.
"'Words are more important than wisdom,' said one privately.
"'Numbers are more important than wisdom,' thought the other to himself.
"And they grew to dislike each other more and more.
"The old king, however, who knew nothing of his sons' animosity, was very happy in the twilight of his reign and spent his days quietly walking and contemplating in the royal gardens. His only regret was that he never had a daughter, for he loved little girls as much as he loved little boys. One day as he was strolling peacefully about the grounds, he discovered two tiny babies that had been abandoned in a basket under the grape arbor. They were beautiful golden-haired girls.
"The king was overjoyed. 'They have been sent to crown my old age,' he cried, and called the queen, his ministers, the palace staff, and, indeed, the entire population to see them.
"'We'll call this one Rhyme and this one Reason,' he said, and so they became the Princess of Sweet Rhyme and the Princess of Pure Reason and were brought up in the palace.
"When the old king finally died, the kingdom was divided between his two suns, with the provision that they would be equally responsible for the welfare of the young princesses. One son went south and became Azaz the Unabridged, king of Dictionopolis, and the other went north and became the Mathemagician, ruler of Digitopolis; and, true to their words, they both provided well for the little girls, who continued to live in Wisdom.
"Everyone loved the princesses because of their great beauty, their gentle ways, and their ability to settle all controversies fairly and reasonably. People with problems or grievances or arguments came from all over the land to seek advice, and even the two brothers, who by this time were fighting continuously, often called upon them to help decide matters of state. It was said by everyone that 'Rhyme and Reason answer all problems.'
"Then one day they had the most terrible quarrel of all. King Azaz insisted that words were far more significant than numbers and hence his kingdom was truly the greater, and the Mathemagician claimed that numbers were much more important than words and hence his kingdom was supreme. They discussed and debated and raved and ranted until they were on the verge of blows, when it was decided to submit the question to arbitration by the princesses.
"After days of careful consideration, in which all the evidence was weighed and all the witnesses heard, they made their decision:
"'Words and numbers are of equal value, for, in the cloak of knowledge, one is warp and the other woof. It is no more important to count the sands than it is to name the stars. Therefore, let both kingdoms live in peace.'
"Everyone was pleased with the verdict. Everyone, that is, but the brothers, who were beside themselves with anger.
"'What good are these girls if they cannot settle an argument in someone's favor?' they growled, since both were more interested in their own advantage than in the truth. 'We'll banish them from the kingdom forever.'
"And so they were taken from the palace and sent far away to the Castle in the Air, and they have not been seen since. That is why today, in all this land, there is neither Rhyme nor Reason."