The working class is not perishing, it is growing, becoming stronger, gaining courage, consolidating itself, educating itself and becoming steeled in battle. We are pessimists as far as serfdom, capitalism and petty, production are concerned, but we are ardent optimists in what concerns the working-class movement and its aims. We are already laying the foundation of a new edifice and our children will complete its construction.

That is the reason—the only reason—why we are unconditionally the enemies of neomalthusianism, suited only to unfeeling and egotistic petty-bourgeois couples, who whisper in scared voices: “God grant we manage somehow by our selves. So much the better if we have no children.”

It goes without saying that this does not by any means prevent us from demanding the unconditional annulment of all laws against abortions or against the distribution of medical literature on contraceptive measures, etc. Such laws are nothing but the hypocrisy of the ruling classes. These laws do not heal the ulcers of capitalism, they merely turn them into malignant ulcers that are especially painful for the oppressed masses. Freedom for medical propaganda and the protection of the elementary democratic rights of citizens, men and women, are one thing. The social theory of neomalthusianism is quite another. Class-conscious workers will always conduct the most ruthless struggle against attempts to impose that reactionary and cowardly theory on the most progressive and strongest class in modern society, the class that is the best prepared for great changes.

— Vladimir Lenin (1870-1924)
The Working Class and NeoMalthusianism , 1913