Nothing is easier than to give Christian asceticism a socialist tinge. Has not Christianity declaimed against private property, against marriage, against the State? Has it not preached in place of these, charity and poverty, celibacy and mortification of the flesh, monastic life and Mother Church? Christian socialism is but the holy water with which the priest consecrates the heart-burnings of the aristocrat.
These words of Marx and Engels (Communist Manifesto, 3:I:a) suggest that Christianity may be initially quite useful for the socialist cause. Even though the abolition of all religion is ultimately a necessity in their suggested system, Marx and Engels recognize the practicality of incremental progress toward their goals. Hence, they welcome a slight retasking of Christian ideas in order to facilitate societal drift toward socialism, and ultimately toward communism.