We must choose some commodity to be the denominator of value. We can find no commodity which is not itself subject to fluctuation in its ratio of exchange with other things. Great crises have been caused in past times by fluctuations in the value of the commodities chosen as money, and such an element is, no doubt, at hand in the present crisis, although it had nothing to do with bringing it about. It follows that any improvement in the world's money is worth any sacrifice which it can possibly cost, if it tends to secure a more simple, exact, and unchanging standard of value.
The next point of which I wish to speak is easily introduced by the last remark; that point is the cost of all improvement. The human race has made no step whatever in civilization which has not been won by pain and distress. It wins no steps now without paying for them in sacrifices. To notice only things which are directly pertinent to our present purpose: every service which we win from nature displaces the acquired skill of the men who formerly performed the service; every such step is a gain to the race, but it imposes on some men the necessity of finding new means of livelihood, and if those men are advanced in life, this necessity may be harsh in the extreme. Every new machine, although it saves labor, and because it saves labor, serves the human race, yet destroys a vested interest of some laborers in the work which it performs. It imposes on them the necessity of turning to a new occupation, and this is hardly ever possible without a period of distress. It very probably throws them down from the rank of skilled to that of unskilled labor. Every new machine also destroys capital. It makes useless the halfworn-out machines which it supersedes. So canals caused capital which was invested in turnpikes and state coaches to depreciate, and so railroads have caused the capital invested in canals and other forms to depreciate. I see no
