perintending and commanding talent, or that engineering knowledge and skill which belong to the second class. They do not know why a country needs a fortress here or there, nor have they the knowledge or skill in military fortifications, which would qualify them to superintend its construction. They are mere artisans, with less of mental (but possibly more of physical) ability than either of the other classes. Though unable to plan or engineer a fortification, they understand masonry and can lay brick and stone better than either of the classes above them.
And so with all the operatives who perform the work assigned them by the agents of government in each of its several departments. They are verily the hands of this organic body, which, set at work and directed by the intermediate class or trunk, execute the plans which the head conceives and desires to have executed. And the work when completed is the product of the joint labor of these three classes who sustain to each other the relation of principals, agents, and operatives—highest, middle, and lowest—head, trunk, and extremities—end, cause, and effect. And as the end flows through the cause into the effect (which is the everlasting law of influx), or as the head, by means of the body, puts the extremities in motion, so this first class, by means of the second, set the third or operatives at work; and the combined knowledge and labors of the three are exhibited in the final result, which is the ultimate.
And wherever, in an advanced stage of society, a work of any magnitude is to be done—as the construction of a railroad, the building of a ship, the erection
