CHAP. XVI. They enter Cairo, and find every man happy. AS they approached the city, which filled the strangers with astonishment, "This, said Imlac to the prince, is the place where travellers and merchants assemble from all the corners of the earth. You will here find men of every character, and every occupation. Commerce is here honourable: I will act as a merchant, and you shall live as strangers, who have no other end of travel than curiosity; it will soon be observed that we are rich; our reputation will procure us access to all whom we shall desire to know; you will see all the conditions of humanity, and enable yourself at leisure to make your choice of life." They now entered the town, stunned by the noise, and offended by the crowds. Instruction had not yet so prevailed over habit, but that they wondered to see themselves pass undistinguished along the street, and met by the lowest of the people without reverence or notice. The princess could not at first bear the thought of being levelled with the vulgar, and, for some days, continued in her chamber, where she was served by her favourite as in the palace of the valley. Imlac, who understood traffick, sold part of the jewels the next day, and hired a house, which he adorned with such magnificence, that he was immediately considered as a merchant of great wealth. His politeness attracted many acquaintance, and his generosity made him courted by many dependants. His table was crowded by men of every nation, who all admired his knowledge, and solicited his favour. His companions, not being able to mix in the conversation, could make no discovery of their ignorance or surprise, and were gradually initiated in the world as they gained knowledge of the language. The prince had, by frequent lectures, been taught the use and nature of money; but the ladies could not, for a long time, comprehend what the merchants did with small pieces of gold and silver, or why things of so little use should be received as equivalent to the necessaries of life. They studied the language two years, while Imlac was preparing to set before them the various ranks and conditions of mankind. He grew acquainted with all who had any thing uncommon in their fortune or conduct. He frequented the voluptuous and the frugal, the idle and the busy, the merchants and the men of learning. The prince, being now able to converse with fluency, and having learned the caution necessary to be observed in his intercourse with strangers, began to accompany Imlac to places of resort, and to enter into all assemblies, that he might make his choice of life. For some time he thought choice needless, because all appeared to him equally happy. Wherever he went he met gayety and kindness, and heard the song of joy, or the laugh of carelesness. He began to believe that the world overflowed with universal plenty, and that nothing was withheld either from want or merit; that every hand showered liberality, and every heart melted with benevolence: "and who then, says he, will be suffered to be wretched?" Imlac permitted the pleasing delusion, and was unwilling to crush the hope of inexperience, till one day, having sat a while silent, "I know not, said the prince, what can be the reason that I am more unhappy than any of our friends. I see them perpetually and unalterably chearful, but feel my own mind restless and uneasy.