Consider what the mere protection and defence of life used to cost, when every man had to be fighter most of his life. Ninety per cent., say, of masculine energy went to defend life; while the remaining ten, and the women, in a narrow, feeble way, maintained it. They lived, to be sure, fighting all the time for the sorry privilege. Now we have systematised military service so that only a tiny fraction of our men, for a very short period of life, need be soldiers; and peace is secured, not by constant painful struggles, but by an advanced economic system. "Eternal vigilance" may be "the price of liberty," but it is a very high price; and paid only by the barbarian who has not risen to the stage of civilised service. Organisation among men has reduced this wasteful and crippling habit of being every-man-his-own-soldier. We do not have to carry a rifle and peer around every street-corner for a hidden foe. As a result the released energy of the ninety per cent. men, a tenth being large allowance for all the fighting necessary, is now poured into the channels that lead to wealth, peace, education, general progress. Yet we are still willing that the personal care of life, the service of daily physical needs, shall monopolise as many women as that old custom of universal warfare monopolised men! Ninety per cent. of the feminine energy of the world is still spent in ministering laboriously to the last details of bodily maintenance; and the other tenth is supposed to do nothing but supervise the same tasks, and flutter about in fruitless social amusement. This crude waste of half the world's force keeps back human progress just as heavily as the waste of the other half did. By as much as the world has grown toward peace and power and unity since men left off spending their lives in universal warfare, will it grow further toward that much-desired plane when women leave off spending their lives in universal house-service. The mere release of that vast fund of energy will in itself increase all the facilities of living; but there is a much more important consequence. The omnipresent domestic ideal is a deadly hinderance to the social ideal. When half our population honestly believe that they have no duties outside the home, the other half will not become phenomenal statesmen. This cook-and-housemaid level of popular thought is the great check. The social perspective is entirely lost; and a million short-sighted homes, each seeing only its own interests, cannot singly or together grasp the common good which would benefit them all. That the home has improved as much as it has is due to the freedom of man outside it. That it is still so clumsy, so inadequate, so wickedly wasteful of time, of money, of human life, is due to the confinement of woman inside it.