This in general terms is what is here intended by the phrase the Normal Social Life. It is still the substantial part of the rural life of all Europe and most Asia and Africa, and it has been the life of the great majority of human beings for immemorial years. It is the root life. It rests upon the soil, and from that soil below and its reaction to the seasons and the moods of the sky overhead have grown most of the traditions, institutions, sentiments, beliefs, superstitions, and fundamental songs and stories of mankind.
But since the very dawn of history at least this Normal Social Life has never been the whole complete life of mankind. Quite apart from the marginal life of the savage hunter, there have been a number of forces and influences within men and women and without, that have produced abnormal and surplus ways of living, supplemental, additional, and even antagonistic to this normal scheme.
And first as to the forces within men and women. Long as it has lasted, almost universal as it has been, the human being has never yet achieved a perfect adaptation to the needs of the Normal Social Life. He has attained nothing of that frictionless fitting to the needs of association one finds in the bee or the ant. Curiosity, deep stirrings to wander, the still more ancient inheritance of the hunter, a recurrent distaste for labour, and resentment against the necessary subjugations of family life have always been a straining force within the agricultural community. The increase of population during periods of prosperity has led at the touch of bad seasons and adversity to the desperate reliefs of war and the invasion of alien localities. And the nomadic and adventurous spirit of man found reliefs and opportunities more particularly along the shores of great rivers and inland seas. Trade and travel began, at first only a trade in adventitious things, in metals and rare objects and luxuries and slaves. With trade came writing and money; the inventions of debt and rent, usury and tribute. History finds already in its beginnings a thin network of trading and slaving flung over the world of the Normal Social Life, a network whose strands are the early roads, whose knots are the first towns and the first courts.