What the submarine and aircraft make manifest and convincing is this point, which argument alone has never been able to hammer into the mass of inattentive minds, that if the human intelligence is applied continuously to the mechanism of war it will steadily develop destructive powers, but that it will fail to develop any corresponding power of decision and settlement, because the development of the former is easy and obvious in comparison with the development of the latter; it will therefore progressively make war more catastrophic and less definitive. It will not make war impossible in the ordinary meaning of the word, the bigger the gun and the viler the lethal implement the more possible does war become, but it will make war "impossible" in the slang use of five or six years ago, in the sense, that is, of its being utterly useless and mischievous, the sense in which Norman Angell employed it and so brought upon himself an avalanche of quite unfair derision. No nation ever embarked upon so fair a prospect of conquest and dominion as the victorious Germans when, after 1871, they decided to continue to give themselves to the development of overwhelming military power. And after exertions unparalleled in the whole history of mankind their net conquests are nothing; they have destroyed enormously and achieved no other single thing, and today they repeat on a colossal scale the adventures of Fort Chabrol and Sidney Street, and are no better than a nation of murderous outcasts besieged by an outraged world.