Next, I did not buy it at its own price, but at yours. “It is,” you say, “worth more than its sale price.” True, but it cannot be sold for more. The price of everything varies according to circumstances; after you have well praised your wares, they are worth only the highest price at which you can sell them; a man who buys things cheap is not on that account under any obligation to the seller. In the next place, even if they are worth more, there is no generosity in your letting them go for less, since the price is settled by custom and the rate of the market, not by the uses and powers of the merchandise. What would you state to be the proper payment of a man who crosses the seas, holding a true course through the midst of the waves after the land has sunk out of sight, who foresees coming storms, and suddenly, when no one expects danger, orders sails to be furled, yards to be lowered, and the crew to stand at their posts ready to meet the fury of the unexpected gale? and yet the price of such great skill is fully paid for by the passage money. At what sum can you estimate the value of a lodging in a wilderness, of a shelter in the rain, of a bath or fire in cold weather? Yet I know on what terms I shall be supplied with these when I enter an inn.