The truth is that we ought radically to revise the presuppositions as to human motives on which current presentations of economic theory are ordinarily founded and in terms of which the discussion of economic question is usually carried on. The assumption that the stimulus of imminent personal want is either the only spur, or a sufficient spur, to productive effort is a relic of a crude psychology which has little warrant either in past history or in present experience. It derives what plausibility it possesses from a confusion between work in the sense of the lowest _quantum_ of activity needed to escape actual starvation, and the work which is given, irrespective of the fact that elementary wants may already have been satisfied, through the natural disposition of ordinary men to maintain, and of extraordinary {159} men to improve upon, the level of exertion accepted as reasonable by the public opinion of the group of which they are members. It is the old difference, forgotten by society as often as it is learned, between the labor of the free man and that of the slave. Economic fear may secure the minimum effort needed to escape economic penalties. What, however, has made progress possible in the past, and what, it may be suggested, matters to the world to-day, is not the bare minimum which is required to avoid actual want, but the capacity of men to bring to bear upon their tasks a degree of energy, which, while it can be stimulated by economic incentives, yields results far in excess of any which are necessary merely to avoid the extremes of hunger or destitution. That capacity is a matter of training, tradition and habit, at least as much as of pecuniary stimulus, and the ability of a professional association representing the public opinion of a group of workers to raise it is, therefore, considerable. Once industry has been liberated from its subservience to the interests of the functionless property-owner, it is in this sphere that trade unions may be expected increasingly to find their function. Its importance both for the general interests of the community and for the special interests of particular groups of workers can hardly be exaggerated. Technical knowledge and managerial skill are likely to be available as readily for a committee appointed by the workers in an industry as for a committee appointed, as now, by the shareholders. But it is more and more evident to-day that the crux of the economic situation is not {160} the technical deficiencies of industrial organization, but the growing inability of those who direct industry to command the active good will of the _personnel_. Their co-operation is promised by the conversion of industry into a profession serving the public, and promised, as far as can be judged, by that alone.