These preliminaries were indispensable in order to clearly appreciate the role of machinery and to make plain the series of economic evolutions. And just here I will remind the reader that we are not constructing a history in accordance with the order of events, but in accordance with the succession of ideas. The economic phases or categories are now contemporary, now inverted, in their manifestation; hence the extreme difficulty always felt by the economists in systematizing their ideas; hence the chaos of their works, even those most to be commended in every other respect, such as Adam Smith's, Ricardo's, and J. B. Say's. But economic theories none the less have their logical succession and their series in the mind: it is this order which we flatter ourselves that we have discovered, and which will make this work at once a philosophy and a history. % 2.--Machinery's contradiction.--Origin of capital and wages. From the very fact that machinery diminishes the workman's toil, it abridges and diminishes labor, the supply of which thus grows greater from day to day and the demand less. Little by little, it is true, the reduction in prices causing an increase in consumption, the proportion is restored and the laborer set at work again: but as industrial improvements steadily succeed each other and continually tend to substitute mechanical operations for the labor of man, it follows that there is a constant tendency to cut off a portion of the service and consequently to eliminate laborers from production. Now, it is with the economic order as with the spiritual order: outside of the church there is no salvation; outside of labor there is no subsistence. Society and nature, equally pitiless, are in accord in the execution of this new decree. "When a new machine, or, in general, any process whatever that expedites matters," says J. B. Say, "replaces any human labor already employed, some of the industrious arms, whose services are usefully supplanted, are left without work. A new machine, therefore, replaces the labor of a portion of the laborers, but does not diminish the amount of production, for, if it did, it would not be adopted; IT DISPLACES REVENUE. But the ultimate advantage is wholly on the side of machinery, for, if abundance of product and lessening of cost lower the venal value, the consumer--that is, everybody--will benefit thereby."