By the end of September 1914 it had become reasonably clear that the war would be one of endurance, and the comparatively equal though fluctuating strength of the two groups of adversaries has since shown that in such endurance the main factor will be the moral factor rather than the material. An examination of the moral strength of the two arch-enemies will therefore have the interest of life and death behind it, as well as such as may belong to the thesis which stands at the head of this chapter. Germany affords a profoundly interesting study for the biological psychologist, and it is very important that we should not allow what clearness of representation we can get into our picture of her mind to be clouded by the heated atmosphere of national feeling in which our work must be done. As I have said elsewhere, it is merely to encourage fallacy to allow oneself to believe that one is without prejudices. The most one can do is to recognize {157} what prejudices are likely to exist and liberally to allow for them. If I were to say that at the present moment I can induce myself to believe that it will ever be possible for Europe to contain a strong Germany of the current type and remain habitable by free peoples, the apparent absence of national bias in the statement would be a mere affectation, and by no means an evidence of freedom from prejudice. I am much more likely to get into reasonable relations with the truth if I admit to myself, quite frankly, my innermost conviction that the destruction of the German Empire is an indispensable preliminary to the making of a civilization tolerable by rational beings. Having recognized the existence of that belief as a necessary obstacle to complete freedom of thought, it may be possible to allow for it and to counteract what aberrations of judgment it may be likely to produce. * * * * * In making an attempt to estimate the relative moral resources of England and Germany at the present time it is necessary to consider them as biological entities or major units of the human species in the sense of that term we have already repeatedly used. We shall have to examine the evolutionary tendencies which each of these units has shown, and if possible to decide how far they have followed the lines of development which psychological theory indicates to be those of healthy and progressive development for a gregarious animal.