When the international working class understands the real cause of wars, the private property basis of modern society, wars will be abolished. War is the prostitution of genius, the brutalising of the human race. You invent a bomb by which a hundred thousand human lives can be snuffed out in the twinkling of an eye, and your fortune is made.
In socialism genius will be exalted for its service to humanity.
No more will the people of one country be arrayed in deadly conflict with the people of another. With socialism war will be forever ended. The interests of the working class of one country will be the same as the interests of the working class of all other countries.
Workers should absolutely refuse to shoulder a weapon at the behest of any capitalist murderer whatever. If a capitalist wants to commit murder let him commit it himself.
Capitalism is war. With the end of capitalism comes the end of war. With the beginning of socialism comes the inauguration of peace, the start of the march of an advancing civilisation.