One common form is what we call “the sense of duty.” A single animal has no “duty,” he acts and reacts under direct stimuli, and so in large measure does the savage. But social maintenance requires a steady service without immediate and apparent cause; an even standard of merit in the work done; a reliability in the fulfilment of the allotted task, and, at times, a tremendous fervour of exertion and heroism. The “feeling” in us which urges to these acts is as deep and unreasonable as any other “feeling”; it is a genuine passion. The irritation of a mother at any criticism of her child, however plainly merited, is perfectly paralleled by the irritation of the citizen at any criticism of his country. The instant rush to the rescue of an injured “fellow creature,” co-creature, member of the same great body, is as blind and instinctive as the mother’s rush to save the child. It finds its most familiar and acute form in the soldier “dying for his country.” Devotion to “a cause” of any sort, a class, a club, a corps, a union, the intense “co-ability” of the human creature, this is but manifestation of the social passion. The hero, the statesman, the patriot, the public saviour and servant of any sort are conspicuous examples of this feeling at its height; the reformer and religious leader, from the most mistaken enthusiasts to the greatest prophets and teachers, are all exponents of this mightiest of forces, the social passion. A blind, deep, instinctive pressure, a _must_ in the very blood, a feeling bred of centuries of social contact and interdependence, this is what kindles the great hearts who live or die to serve the world. Where it touches the present subject is in its relation to Work, of which indeed it is the immediate conscious cause. The maternal passion does not manifest itself merely in bursts of wild self-sacrifice, but speaks plainest in the patient, steady labour with which it serves the young. So the social passion, while most conspicuous in Horatius at the bridge, is as valuable in the engineer at the lever, or the steersman at the helm. The Love of Work is one great manifestation of the Social Passion. The maternal function urging to expression, this gives the rich joy of nursing one’s child, and that almost inconceivable torment of the black past where the starving baby cried before the chained mother’s bursting breasts. The social function urging to expression, this gives the rich joy of work accomplished and the aching, quenchless misery of work denied. Fulfilment of function, that is Work, and, forbidden, the poor functionary aches like a tied leg.