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.
Leon TrotskyRevolutionary realism tries to draw the maximum advantage from every situation - that is what makes it revolutionary - but at the same time it does not permit us to set ourselves fantastic aims - that is what makes it realistic.
Leon Trotsky