If it is a question of seeking formal contradictions, then obviously we must do so on the side of the White Terror, which is the weapon of classes which consider themselves Christian, patronize idealist philosophy, and are firmly convinced that the individuality (their own) is an end-in-itself. As for us, we were never concerned with the Kantian-priestly and vegetarian-Quaker prattle about the sacredness of human life. We were revolutionaries in opposition, and have remained revolutionaries in power. To make the individual sacred we must destroy the social order which crucifies him. And this problem can only be solved by blood and iron.

Terrorism and Communism : A Reply to Karl Kautsky (1920), Chapter 4: Communism