The man, who constitutes the progressive wing of the human race, went on outside as best he might, organising society, and always enshrining in his heart the woman and the home as one and indivisible. This gives the subtle charm of sex to a man's home ideals, and, equally, the scorn of sex to a man's home practices. Home to the man first means mother, as it does to all creatures, but later, and with renewed intensity, it means his own private harem--be it never so monogamous--the secret place where he keeps his most precious possession.
Thus the word "home," in the human mind, touches the spring of a large complex group of ideas and sentiments, some older than humanity, some recent enough for us to trace their birth, some as true and inalienable as any other laws of life, some as false and unnecessary as any others of mankind's mistakes. It does not follow that all the earliest ones are right for us to-day, because they were right for our remote predecessors, or that those later introduced are therefore wrong.
What is called for is a clear knowledge of the course of evolution of this earliest institution and an understanding of the reasons for its changes, that we may discriminate to-day between that which is vital and permanent in home life and that which is unessential and injurious. We may follow without difficulty the evolution of each and all the essential constituents of home, mark the introduction of non-essentials, show the evils resultant from forced retention of earlier forms; in a word, we may study the evolution of the home precisely as we study that of any other form of life.
Take that primal requisite of safety and shelter which seems to underlie all others, a place where the occupant may be protected from the weather and its enemies. This motive of home-making governs the nest-builder, the burrow-digger, the selector of caves; it dominates the insect, the animal, the savage, and the modern architect. Dangers change, and the home must change to suit the danger. So after the caves were found insufficient, the lake-dwellers built above the water, safe when the bridge was in. The drawbridge as an element of safety lingered long, even when an artificial moat must needs be made for lack of lake. When the principal danger is cold, as in Arctic regions, the home is built thick and small; when it is heat, we build thick and large; when it is dampness, we choose high ground, elevate the home, lay drains; when it is wind, we seek a sheltered slope, or if there is no slope, plant trees as a wind-break to protect the home, or, in the worst cases, make a "cyclone cellar."