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Rh practical application. Thermo-electricity renders possible the direct and purposive utilisation of solar energy. Modern chemical researches point to the possibility of artificially manufacturing foodstuffs, and so on. Were man to apply all his combative energy to the utilisation of the forces of nature, not merely could he live at ease, but there would be room in the world for milliards of additional human beings. When compared with this splendid struggle, how puny seems the great war! What has that war to do with the real struggle for existence? It is a product of degeneration. War is justifiable. Not war between human beings. But creative war for man’s mastery over natural forces, the young war of which hardly a millionth part has yet been waged. In this war we can foresee victories such as no human being has ever yet won.

Nicolai, contrasting this creative struggle with the destructive struggle, symbolises them in the persons of two German men of science. One of these is Professor Haber, who has turned his knowledge to account for the manufacture of asphyxiating bombs, and who will doubtless not be forgotten. The other is Emil Fischer, the brilliant chemist who has achieved the synthetic production of sugar, and who will perhaps achieve the synthesis of albumen. Fischer is the founder, or at any rate the forerunner, of the new era of humanity. Future generations will gratefully refer to him as one of the supreme conquerors in the victorious struggle for the sources of life. He is in very truth a practitioner of the “divine art” of which Archimedes spoke.

Nicolai’s arguments, showing that war is antagonistic to human progress, are confronted with an indisputable fact, a fact which has to be explained—the actual existence of war, and its monstrous expansion. Never has war been more powerful, more brutal, more widespread. Never has war been more glorified. In an interesting chapter (Chapter Fourteen), which introduces a number of