Many other such substitutes for war will be discovered, but perhaps precisely thereby it will become more and more obvious that such a highly cultivated and therefore necessarily enfeebled humanity as that of modern Europe not only needs wars, but the greatest and most terrible wars, consequently occasional relapses into barbarism, lest, by the means of culture, it should lose its culture and its very existence.
Human, All Too Human: A Book for Free Spirits (ed. 1910)