2. _Time-value as the premium rate on present goods is unlike the ordinary market price, of goods only in the special nature of the utilities exchanged._ The one peculiar need in the theory of this subject is a clear understanding on this point. The goods exchanged, or compared, are direct and indirect goods, or present and future goods, or, more generally speaking, two goods or groups of goods unequally distant in time from present enjoyment. What are sold in a case such as capitalization, involving an estimate of time-value, are present goods or gratifications; what are bought are future gratifications, or indirect agents which stand for, typify, or make possible, future gratifications. Practically every man in a market acts on the knowledge of what the exchange of direct and indirect goods means; yet abstractly stated, the thought seems at first difficult. In valuing any durable good, the theory of time-value is implied. Every time a machine, a house, a book, a field, is bought, the distinction between direct and indirect goods is acted upon, for a choice has been made between present enjoyment and future provision. Anything that endures is an indirect good and implies in its valuation a premium rate on present goods. The real nature of the exchange in time-valuation is made unclear by the uncertainty of life, leading men to work on to provide against possibility of mishaps; for the most part the world's treasures never afford to their temporary owners the gratification that they typify, or could give. The nature of this exchange is made unclear also by habit, under the influence of which the exchange in so many cases is not carefully thought out, is not the result of a close comparison of the utilities of goods in present and future moments. The real nature of this exchange is made unclear by the indirect, or induced, gratification derived from wealth. Wealth gives to its owner power, prestige, the esteem of his fellows, and pride in evidences of success and growing prosperity. Its very possession creates a new need and imparts to it another utility, that of insuring against the misery of a declining fortune one who has enjoyed wealth and power. Men make the greatest efforts up to the last moment of life to retain wealth that they will enjoy only in this subtle and indirect way. Thus every motive that leads men to postpone present enjoyment makes them bidders for indirect agents and for future goods, and helps to determine the market rate of premium on the present, and of discount on the future. [Sidenote: The scarcity of present gratifications]