"I have learnt much from my attendants, and know this world pretty well by hearsay," said the prince, as they reclined on the rich carpet which was spread on the roof. The old man smiled, but did not answer; perhaps because he did not care to undeceive his young companion, perhaps because so many slaves were present, some of whom were serving them with fruit, and others burning rich odors on a little chafing-dish that stood between them. "But there are some words to which I never could attach any particular meaning," proceeded the prince, as the slaves began to retire, "and three in particular that my attendants cannot satisfy me upon, or are reluctant to do so." "What words are those, my prince?" asked the old man. The prince turned on his elbow to be sure that the last slave had descended the tower stairs, then replied: "O man of much knowledge, the words are these--Labor, and Liberty, and Gold." "Prince," said the old man, "I do not wonder that it has been hard to make thee understand the first, the nature of it, and the cause why most men are born to it; as for the second, it would be treason for thee and me to do more than whisper it here, and sigh for it when none are listening; but the third need hardly puzzle thee; thy hookah [Footnote: _Hookah_: a kind of pipe for smoking tobacco, used in Eastern Europe and Asia.] is bright with it; all thy jewels are set in it; gold is inlaid in the ivory of thy bath; thy cup and thy dish are of gold, and golden threads are wrought into thy raiment." "That is true," replied the prince, "and if I had not seen and handled this gold, perhaps I might not find its merits so hard to understand; but I possess it in abundance, and it does not feed me, nor make music for me, nor fan me when the sun is hot, nor cause me to sleep when I am weary; therefore when my slaves have told me how merchants go out and brave the perilous wind and sea, and live in the unstable ships, and run risks from shipwreck and pirates, and when, having asked them why they have done this, they have answered, 'For gold,' I have found it hard to believe them; and when they have told me how men have lied, and robbed, and deceived; how they have murdered one another, and leagued together to depose kings, to oppress provinces, and all for gold; then I have said to myself, either my slaves have combined to make me believe that which is not, or this gold must be very different from the yellow stuff that this coin is made of, this coin which is of no use but to have a hole pierced through it and hang to my girdle, that it may tinkle when I walk." "Notwithstanding this," said the old man, "nothing can be done without gold; for it is better than bread, and fruit, and music, for it can buy them all, since all men love it, and have agreed to exchange it for whatever they may need." "How so?" asked the prince.