The Golden Rule, Do unto others as you would that they should do unto you, is the best summary of duty. And the keeping of that rule is possible only in so far as we love others. We must put ourselves in their place, before we can know how to treat them as we would like to be treated. And this putting self in the place of another is the very essence of love. Thou shalt love thy neighbor as thyself includes all social law. Love is the fulfilling of the law.

Love takes different forms in different circumstances and in different relations. To the hungry love gives food; to the thirsty drink; to the naked clothes; to the sick nursing; to the ignorant instruction; to the blind guidance; to the erring reproof; to the penitent forgiveness. Indeed, the social virtues which will occupy the remainder of this book are simply applications of love in differing relations and toward different groups and institutions.

THE REWARD.

Love the only true bond of union between persons.—The desire to be in unity with our fellow-men is, as John Stuart Mill tells us, "already a powerful principle in human nature, and happily one of those which tend to become more strong, even without express inculcation, from the influences of advancing civilization. The deeply rooted conception which every individual even now has of himself as a social being, tends to make him feel it one of his natural wants that there should be harmony between his feelings and aims and those of his fellow-creatures." The life of love is in itself a constant realization of this deepest and strongest desire of our nature. Love is the essence of social and spiritual life; and that life of unity with our fellow-men which love creates is in itself love's own reward. "Life is energy of love." Oneness with those we love is the only goal in which love could rest satisfied. For love is "the greatest thing in the world," and any reward other than union with its object would be a loss rather than a gain.

THE TEMPTATION.

Kant remarks that a dove, realizing that the resistance of the air is the sole obstacle to its progress, might imagine that if it could only get away from the air altogether, it would fly with infinite rapidity and ease.—But in fact, if the air were withdrawn for an instant it would fall helpless to the ground. Friction is the only thing the locomotive has to overcome. And if the locomotive could reason it might think how fast it could travel if only friction were removed. But without friction the locomotive could not stir a hair's breadth from the station.

In like manner, inasmuch as the greater part of our annoyances and trials and sufferings come from contact with our fellow-men, it often seems to us that if we could only get away from them altogether, and live in utter indifference to them, our lives would move on with utmost smoothness and serenity. In fact, if these relations were withdrawn, if we could attain to perfect indifference to our fellows, our life as human and spiritual beings would that instant cease.

The temptation to treat our fellow-men with indifference, like all temptations, is a delusion and leads to our destruction. Yet it is a very strong temptation to us all at times. When people do not appreciate us, and do not treat us with due kindness and consideration, it is so easy to draw into our shell and say, "I don't care a straw for them or their good opinion anyway." This device is an old one. The Stoics made much of it; and boasted of the completeness of their indifference. But it is essentially weak and cowardly. It avoids certain evils, to be sure. It does so, however, not by overcoming them in brave, manly fashion; but by running and hiding away from them—an easy and a disgraceful thing to do. Intimate fellowship and close contact with others does bring pains as well as pleasures. It is the condition of completeness and fullness of moral and spiritual life; and the man who will live at his best must accept these pains with courage and resolution.

THE VICE OF DEFECT.

The outcome of indifference and lack of sympathy and fellowship is selfishness.—Unless we first feel another's interests as he feels them, we cannot help being more interested in our own affairs than we are in his, and consequently sacrificing his interests to our own when the two conflict. As George Eliot tells us in "Adam Bede," "Without this fellow-feeling, how are we to get enough patience and charity toward our stumbling, falling companions in the long, changeful journey? And there is but one way in which a strong, determined soul can learn it, by getting his heart-strings bound round the weak and erring, so that he must share not only the outward consequence of their error, but their inward suffering. That is a long and hard lesson."