Section LXIV. The Co-Operation Of Labor. The coöperation or combination(388) of labor must, however, always correspond to the division of labor. Both are but different sides of the one idea of social labor; the separation of different kinds of labor, in so far as they would disturb one another, and the union or combination of them so far as they help one another.(389) The vintner or grower of flax would necessarily die of hunger if he could not certainly count on the grower of corn. The workman in a pin-factory, who prepares only the heads of pins, must be sure of his colleagues who sharpen the points, if his labor would not be entirely in vain. The labor of the merchant is not even thinkable without that of the different producers between whom he mediates. Where the production of a certain article depends on the services of six different kinds of labor, one of which, however, demands thrice the time, and another twice the time of the rest, it is clear, that, in order that the business may be properly carried on, so many workmen should be employed that their number divided by 9 should leave no remainder. (_Rau._) The union or combination of different kinds of labor is most perfect when the workmen live nearest together; when, therefore, they are not separated by great difficulties of transportation; or in different countries, in which case, a war might tear all to pieces. Section LXV. The Principle Of Stability, Or Of The Continuity Of Work.