That, however, is not so. It would be so if the servant were an engine of which the motive power was steam, magnetism, gravitation, or any other agent of calculable force. But he being, on the contrary, an engine whose motive power is a Soul, the force of this very peculiar agent, as an unknown quantity, enters into all the political economist's equations, without his knowledge, and falsifies every one of their results. The largest quantity of work will not be done by this curious engine for pay, or under pressure, or by help of any kind of fuel which may be supplied by the chaldron. It will be done only when the motive force, that is to say, the will or spirit of the creature, is brought to its greatest strength by its own proper fuel; namely, by the affections. It may indeed happen, and does happen often, that if the master is a man of sense and energy, a large quantity of material work may be done under mechanical pressure, enforced by strong will and guided by wise method; also it may happen, and does happen often, that if the master is indolent and weak (however good-natured), a very small quantity of work, and that bad, may be produced by the servant's undirected strength, and contemptuous gratitude. But the universal law of the matter is that, assuming any given quantity of energy and sense in master and servant, the greatest material result obtainable by them will be, not through antagonism to each other, but through affection for each other; and that if the master, instead of endeavouring to get as much work as possible from the servant, seeks rather to render his appointed and necessary work beneficial to him, and to forward his interests in all just and wholesome ways, the real amount of work ultimately done, or of good rendered, by the person so cared for, will indeed be the greatest possible. Observe, I say, "of good rendered," for a servant's work is not necessarily or always the best thing he can give his master. But good of all kinds, whether in material service, in protective watchfulness of his master's interest and credit, or in joyful readiness to seize unexpected and irregular occasions of help. Nor is this one whit less generally true because indulgence will be frequently abused, and kindness met with ingratitude. For the servant who, gently treated, is ungrateful, treated ungently, will be revengeful; and the man who is dishonest to a liberal master will be injurious to an unjust one.