as at present to any large influx of Chinese or Japanese labour. Yet if Japan also were to become a Socialist State, the Japanese might well continue to feel the pressure of population and the desire for an outlet. In such circumstances, all the passions and interests required to produce a war would exist, in spite of the establishment of Socialism in both countries. Ants are as completely Socialistic as any community can possibly be, yet they put to death any ant which strays among them by mistake from a neighbouring ant-heap. Men do not differ much from ants as regards their instincts in this respect, wherever there is a great divergence of race, as between white men and yellow men. Of course the instinct of race-hostility can be overcome by suitable circumstances; but in the absence of such circumstances it remains a formidable menace to the world's peace.
If the peace of the world is ever to become secure, I believe there will have to be, along with other changes, a development of the idea which inspires the project of a League of Nations. As time goes on, the destructiveness of war grows greater and its profits grow less: the rational argument against war acquires more and more force as the increasing productivity of labour makes it possible to devote a greater and greater proportion of the population to the work of mutual slaughter. In quiet times, or when a great war has just ended, men's moods are amenable to the rational grounds in favour of peace, and it is possible to inaugurate schemes designed to make wars less frequent. Probably no civilized nation would embark upon an
