"To belittle the socialist ideology in any way, to turn aside from it in the slightest degree means to strengthen bourgeois ideology. There is much talk of spontaneity. But the spontaneous development of the working-class movement leads to its subordination to bourgeois ideology; for the spontaneous working-class movement is trade-unionism, and trade unionism means the ideological enslavement of the workers by the bourgeoisie. Hence, our task, the task of Social-Democracy, is to combat spontaneity, to divert the working-class movement from this spontaneous, trade-unionist striving to come under the wing of the bourgeoisie, and to bring it under the wing of revolutionary Social Democracy."

“It is not our immediate task to “introduce” socialism, but only to bring social production and the distribution of products at once under the control of the Soviets of Workers’ Deputies.”

“The state is the product and the manifestation of the irreconcilability class antagonisms. The state arises when, where and to the extent that class antagonisms cannot be objectively reconciled. And, conversely, the existence of the state proves that the class antagonisms are irreconcilable.”

“We would be deceiving both ourselves and the people if we concealed from the masses the necessity of a desperate, bloody war of extermination, as the immediate task of the coming revolutionary action.”

“One may become a demagogue out of sheer political innocence.”

“The proletariat needs state power, a centralized organisation of force, an organisation of violence, both to crush the resistance of the exploiters and to lead the enormous mass of the population - the peasants, the petty bourgeoisie, and semi-proletarians - in the work of organising a socialist economy.”

“Rectilinearity and one-sidedness, woodenness and petrification, subjectivism and subjective blindness — voilà the epistemological roots of idealism.”