It is not so that human relations will be conceived when the evil heritage of economic slavery has ceased to mold our instincts. Husbands and wives, parents and children, will be only held together by affection: where that has died, it will be recognized that nothing worth preserving is left. Because affection will be free, men and women will not find in private life an outlet and stimulus to the love of domineering, but all that is creative in their love will have the freer scope. Reverence for whatever makes the soul in those who are loved will be less rare than it is now: nowadays, many men love their wives in the way in which they love mutton, as something to devour and destroy. But in the love that goes with reverence there is a joy of quite another order than any to be found by mastery, a joy which satisfies the spirit and not only the instincts; and satisfaction of instinct and spirit at once is necessary to a happy life, or indeed to any existence that is to bring out the best impulses of which a man or woman is capable. In the world which we should wish to see, there will be more joy of life than in the drab tragedy of modern every-day existence. After early youth, as things are, most men are bowed down by forethought, no longer capable of light-hearted gaiety, but only of a kind of solemn jollification by the clock at the appropriate hours. The advice to ``become as little children'' would be good for many people in many respects, but it goes with another precept, ``take no thought for the morrow,'' which is hard to obey in a competitive world. There is often in men of science, even when they are quite old, something of the simplicity of a child: their absorption in abstract thought has held them aloof from the world, and respect for their work has led the world to keep them alive in spite of their innocence. Such men have succeeded in living as all men ought to be able to live; but as things are, the economic struggle makes their way of life impossible for the great majority. What are we to say, lastly, of the effect of our projected world upon physical evil? Will there be less illness than there is at present? Will the produce of a given amount of labor be greater? Or will population press upon the limits of subsistence, as Malthus taught in order to refute Godwin's optimism? I think the answer to all these questions turns, in the end, upon the degree of intellectual vigor to be expected in a community which has done away with the spur of economic competition. Will men in such a world become lazy and apathetic? Will they cease to think? Will those who do think find themselves confronted with an even more impenetrable wall of unreflecting conservatism than that which confronts them at present? These are important questions; for it is ultimately to science that mankind must look for their success in combating physical evils.