But Nicolai is not appalled by the titanic dimensions of the monster he is fighting. Indeed, this very fact gives him confidence in the ultimate victory of his cause. For biology has revealed to him the mysterious law of giganthanasia. One of the most important principles of paleontology teaches that all animals (with the exception of insects, which, for this very reason, are, with the brachiopods, the oldest families on the globe), all species, tend throughout the centuries to grow larger and larger until, of a sudden, when they seem greatest and strongest, their forms disappear from the geological record. In nature it is always the large forms that die. That which is large must die for the reason that, in conformity with the imperious law of growth, the day comes when it exceeds the limits of its primordial possibilities. Thus is it, writes Nicolai, with war. Along the boundless field-grey battle lines, thrills the warning of the coming Twilight of the Gods. Everything beautiful and characteristic in the war of ancient days has vanished. Gone is the gay camp life, gone are the motley uniforms, gone is single combat--gone, in a word, are the show features. The battlefield, now, has become little more than an accessory. In former days the scene of battle used to be selected with care, for then the rival armies manoeuvred for position. To-day the soldiers settle down haphazard and dig themselves in. The essential work is carried on elsewhere, by the provision of finance, munitions, food supply, railways, etc. In place of the one man of genius as general, we have now the impersonal machinery of the general staff. The old lively, joyous war is dead.--It may be that even yet war has not attained its zenith. In the present war there are still neutrals, and perhaps Freiligrath was right in holding that there must first be some battle in which the whole world will share. But if so, that will be the very last. The final war will be the greatest and the most terrible of all, just as the last of the great saurians was the most gigantic. Our technique has swelled war to its extremest limits, and will then slay war.[55] * * * * *