The native intensity of this desire is what makes rural isolation, on the other hand, so unsatisfactory. The bleakness of New England country life as pictured in Edith Wharton's _Ethan Frome_, or in some of Robert Frost's _North of Boston_, is due more than anything else to this privation from companionship. Perhaps nothing better could be said for the rural telephone, the interurban trolley, and the cheap automobile than that they make possible the fulfillment of this normal human longing to be near and with other people in body and spirit. The horror which makes it practically impossible in civilized countries to legalize punishment by solitary confinement and the nervous collapse which such confinement brings about are indications of how deep-seated is this desire.
The "herd instinct," like all the other of man's original tendencies, is educable. It can be trained to respond to groups of various sizes and kinds. In its simplest manifestation it tends to be aroused by the family, but in the history of civilization the group tends progressively to enlarge. The family, the town, the nation--the gregarious instinct may be educated to respond to these ever-widening groups. The intensity and controlling power of this instinct over our actions seems to vary with the degree of intimacy and intercommunication between the individual and the group. In primitive society it is most intense among the family and clan, and the family still remains in civilized society, certainly in rural districts, a very closely knit primary group. But as intercommunication widens, a sense of attachment to and solidarity with a larger group begins to make itself felt. That intercommunication is largely important in extending the group in response to which the herd instinct may be aroused, is well illustrated by the utter lack of national group feeling exhibited during the Great War by recruits drafted from the backwoods districts where they had been tied by no railroads or newspapers to the national civilization of which they were a part.
The devotion of generous-hearted souls to "lost causes," whether political or religious, of the individual to his family or friends in the face of personal privation, are classic illustrations of the power of men's gregarious instinct even in the face of the dictates of reason. In the perhaps extreme but nevertheless suggestive statement of Mr. Trotter: