4. _The postponement of present wants results in bettering the economic environment for the future._ Economic environment means simply the economic conditions in which men live, the stock of wealth, the supply of useful things with which they are surrounded. This betterment may be only temporary, only for the immediate future. Like the busy bee or the prudent ant, one may in summer store the cellar with consumption goods to be consumed the following winter. But often there is a more lasting way of improving the economic environment by converting savings into durable indirect agents. The accumulation of wealth that will yield its fruits only after years of growth is the record, so to speak, of the successful competition of forethought with present desires. It means that the two periods have presented their respective claims and that men have decided in favor of the future. Saving thus lifts society from poverty to wealth by the progressive enlargement of the sources of future utilities. [Sidenote: The kinds of abstinence] 5. _Abstinence is the faculty of mind that enables present wants to be subordinated to future wants._ Abstinence may be considered as a quality, or faculty, of the mind, or as an act resulting from that quality. There is little danger of confusion in this usage, but it is well to note the distinction and the fact that the former is the primary meaning. Abstinence expresses an act of the will, a choice made by man. It is the guardian of the future, so to speak, against the greediness of the present. For convenience we may speak of conservative abstinence as that which keeps men from using up or invading their present stock of resources, and of cumulative abstinence as that which impels them to add to that stock. There is no sharp dividing line, no abrupt break, between these two, yet on the whole they differ. There is a quality of mind very like the inertia or momentum of physical matter. The inertia of mind makes men resist stubbornly the reduction of wealth and of inherited social position; but it requires a more positive quality of mind to add to wealth at the cost of present sacrifice. Abstinence is embodied in individuals, never elsewhere, and is found in most varying degrees of strength. Upon it depends the growth and betterment of man's environment. § II. CONDITIONS FAVORABLE TO SAVING [Sidenote: Political insecurity discourages saving]