This is another difference between national resources or world resources and private resources. The resources of a private person, which are only a link in the whole chain of trade, and which are, therefore, estimated at the value in exchange of their component parts should, indeed, always be increased by savings made. (§ 8.) For even the most excessive increase of supply in general, which largely lowers the price of a whole class of commodities, will never reduce the price of individual quantities of that commodity below zero, and scarcely to zero. It is quite otherwise in the case of national or world resources which must be estimated according to the value in use of their component parts. Every utility supposes a want. Where, therefore, the want of a commodity has not increased, and notwithstanding there is a continuing increase in the supply, the only result must be a corresponding decrease in the utility of each individual part.[221-2] If a people were to save all that remained to them over and above their most urgent necessities, they would soon be obliged to seek a wider market in foreign countries, or loan their capital there; but they would make no advance whatever in higher culture nor add anything to the gladness of life.[221-3] On the other hand, if they would not save at all, they would be able to extend their enjoyments only at the expense of their capital and of their future. Yet these two extremes find their correctives in themselves. In the former case, a glut of the market would soon produce an increased consumption and a diminished production; in the latter the reverse. The ideal of progress demands that the increased outlay with increased production should be made only for worthy objects, and chiefly by the rich, while the middle and lower classes should continue to make savings and thus contribute to wipe out differences of fortune.[221-4] [Footnote 221-1: Up to this point, indeed, wants increase with the means of their satisfaction. The man who has two shirts always strives to get a dozen, while the person who has none at all, very frequently does not care for even one. And so the person who has silver spoons generally desires also to possess silver candle-sticks and silver plates. On Lucullus' 5,000 chlamydes, see _Horat._, Epist., I, 6, 40 ff.]