The fundamental fact is that the demand for the product of labor is ordinarily subject to indefinite increase. If labor is economized in one direction, the power dispensed with will be utilized in another direction. The community income of economic goods is a flow. Under our present system of division of labor each individual uses his share of the product (which he measures in terms of money) to buy the particular commodities, or to make the particular investments he desires. If he gets some commodities cheaper than formerly, he will buy more, or buy commodities he had not been able to buy hitherto or increase his investments. The demand of the community for the product of labor in general will ultimately keep pace with the supply of the product. Economies in production throughout the whole industrial field mean that there will be more commodities to be shared out. Thus, in spite of the fact that there may be, and often are, serious breaches of interest between particular groups of wage earners and society as a whole on the matter of increased production, there can be but one sound policy for labor as a whole. That is to strive to increase production up to a point where further effort would entail a sacrifice of welfare more important than that which the extra product might represent. Such general theoretical propositions as the above, however, will never be sufficient to persuade particular groups of wage earners to take a different view of the interests involved. It is easy to understand Carlyle's contempt for the smug complacency with which such propositions have often been put forward, when he wrote, "New Poor Law: Laissez faire, laissez passer! The master of horses, when the summer labor is done, has to feed his horses through the winter. If he said to his horses: 'Quadrupeds, I have no longer work for you; but work exists abundantly over the world: you are ignorant (or must I read you Political Economy pictures) that the steam engine always in the long-run creates additional work? Railways are forming in one quarter of this earth, canals in another, much cartage is wanted; somewhere in Europe, Asia, Africa and America, doubt it not, ye will find cartage, and good go with you!' They with protrusive upper lip snort dubiously; signifying that Europe, Asia, Africa and America be somewhat out of their beat: that what cartage may be wanted there is not too well known to them. _They_ can find no cartage. They gallop distracted along highways, all fenced in to the right and to the left. Finally under pains of hunger, they take to leaping fences; eating foreign property, and--we know the rest."