What caused the war? The greed of the Italian money bags and capitalists, who need new markets and new achievements for Italian imperialism. What kin… - Vladimir Lenin

The bourgeoisie incites the workers of one nation against those of another in the endeavor to keep them disunited. Class-conscious workers, realising that the break-down of all the national barriers by capitalism is inevitable and progressive, are trying to help to enlighten and organise their fellow-workers from the backward countries.

Throughout the civilised world the teachings of Marx evoke the utmost hostility and hatred of all bourgeois science (both official and liberal), which regards Marxism as a kind of “pernicious sect”. And no other attitude is to be expected, for there can be no “impartial” social science in a society based on class struggle. In one way or another, all official and liberal science defends wage-slavery, whereas Marxism has declared relentless war on that slavery. To expect science to be impartial in a wage-slave society is as foolishly naïve as to expect impartiality from manufacturers on the question of whether workers' wages ought not to be increased by decreasing the profits of capital.

After retaining power for two months and ten days, the workers of Paris, who for the first time in history established the Commune, the embryo of Soviet power, perished at the hands of the French Cadets, Mensheviks and Right Socialist-Revolutionaries of a Kaledin type. The French workers had to pay an unprecedentedly heavy price for the first experience of workers' government, the meaning and purpose of which the overwhelming majority of the peasants in France did not know.