And the varieties of circumstance which influence these reciprocal interests are so endless, that all endeavour to deduce rules of action from balance of expediency is in vain. And it is meant to be in vain. For no human actions ever were intended by the Maker of men to be guided by balances of expediency, but by balances of justice. He has therefore rendered all endeavours to determine expediency futile for evermore. No man ever knew or can know, what will be the ultimate result to himself, or to others, of any given line of conduct. But every man may know, and most of us do know, what is a just and unjust act. And all of us may know also, that the consequences of justice will be ultimately the best possible, both to others and ourselves, though we can neither say what _is_ best, or how it is likely to come to pass. I have said balances of justice, meaning, in the term justice, to include affection,--such affection as one man _owes_ to another. All right relations between master and operative, and all their best interests, ultimately depend on these. We shall find the best and simplest illustration of the relations of master and operative in the position of domestic servants. We will suppose that the master of a household desires only to get as much work out of his servants as he can, at the rate of wages he gives. He never allows them to be idle; feeds them as poorly and lodges them as ill as they will endure, and in all things pushes his requirements to the exact point beyond which he cannot go without forcing the servant to leave him. In doing this, there is no violation on his part of what is commonly called "justice." He agrees with the domestic for his whole time and service, and takes them;--the limits of hardship in treatment being fixed by the practice of other masters in his neighbourhood; that is to say, by the current rate of wages for domestic labour. If the servant can get a better place, he is free to take one, and the master can only tell what is the real market value of his labour, by requiring as much as he will give. This is the politico-economical view of the case, according to the doctors of that science; who assert that by this procedure the greatest average of work will be obtained from the servant, and therefore, the greatest benefit to the community, and through the community, by reversion, to the servant himself.