"If a man has many loaves he cannot eat them all," answered the old man; "therefore he goes to his neighbor and says, 'I have bread and thou hast a coin of gold--let us change'; so he receives the gold and goes to another man, saying, 'Thou hast two houses and I have none; lend me one of thy houses to live in, and I will give thee my gold'; thus again they change, and he that has the gold says, 'I have food enough and goods enough, but I want a wife, I will go to the merchant and get a marriage gift for her father, and for it I will give him this gold.'" "It is well," said the prince; "but in time of drought, if there is no bread in a city, can they make it of gold?" "Not so," answered the old man, "but they must send their gold to a city where there is food, and bring that back instead of it." "But if there was a famine all over the world," asked the prince, "what would they do then?" "Why then, and only then," said the old man, "they must starve, and the gold would be nought, for it can only be changed for that which _is_; it cannot make that which is not." "And where do they get gold?" asked the prince; "is it the precious fruit of some rare tree, or have they whereby they can draw it down from the sky at sunset?" "Some of it," said the old man, "they dig out of the ground." Then he told the prince of ancient rivers running through terrible deserts, whose sands glitter, with golden grains and are yellow in the fierce heat of the sun, and of dreary mines where the Indian slaves work in gangs tied together, never seeing the light of day; and lastly (for he was a man of much knowledge, and had traveled far), he told him of the valley of the Sacramento in the New World, and of those mountains where the people of Europe send their criminals, and where now their free men pour forth to gather gold, and dig for it as hard as if for life; sitting up by it at night lest any should take it from them, giving up houses and country, and wife and children, for the sake of a few feet of mud, whence they dig clay that glitters as they wash it; and how they sift it and rock it as patiently as if it were their own children in the cradle, and afterwards carry it in their bosoms, and forego on account of it safety and rest. "But, prince," he proceeded, observing that the young man was absorbed in his narrative, "if you would pass your word to me never to betray me, I would procure for you a sight of the external world, and in a trance you should see those places where gold is dug, and traverse those regions forbidden to your mortal footsteps." Upon this, the prince threw himself at the old man's feet, and promised heartily to observe the secrecy required, and entreated that, for however short time, he might be suffered to see this wonderful world.