I can imagine a war starting and well-nigh ending at once, by a quiet and simultaneous sinking, from under water and from the air, of most British ships, in port or at sea. I can imagine little standardised submarines surreptitiously prepared by the thousand, and tens of thousands of the enemy population equipped with flying machines, instructed in flying as part of their ordinary civil life, and ready to serve their country at a moment's notice, by taking a little flight and dropping a little charge of an explosive many times more destructive than any in use now. The agility of submarines and flying machines will grow almost indefinitely. And even if we carry our commerce under the sea instead of on the surface, we shall not be guaranteed against attack by air. The air menace is, in fact, infinitely greater than that from under water. I can imagine all shipping in port, the Houses of Parliament, the Bank of England, most commercial buildings of importance, and every national granary wrecked or fired in a single night, on a declaration of war springing out of the blue. The only things I cannot imagine wrecked or fired are the British character and the good soil of Britain. These are sinister suggestions, but there is really no end to what might now be done to us by any country which deliberately set its own interests and safety above all considerations of international right, especially if such country were moved to the soul by longing for revenge, and believed success certain. After this world-tragedy let us hope nations may have a little sense, less of that ghastly provincialism whence this war sprang; that no nation may teach in its schools that it is God's own people, entitled to hack through, without consideration of others; that professors may be no longer blind to all sense of proportion; Emperors things of the past; diplomacy open and responsible; a real Court of Nations at work; Military Chiefs unable to stampede a situation; journalists obliged to sign their names and held accountable for inflammatory writings. Let us hope, and let us by every means endeavour to bring about this better state of the world. But there is many a slip between cup and lip; there is also such a thing as hatred. And to rely blindly on a peace which, at the best, must take a long time to prove its reality, is to put our heads again under our wings. Once bit, twice shy. We shall make a better world the quicker if we try realism for a little.