如果说共产主义社会在将来某个时候不得不像已经对物的生产进行调整那样,同时也对人的生产进行调整,那末正是那个社会，而且只有那个社会

It's a hard job to control a nation's population. In order to decrease the population in a certain country, and to be fair to every family living there, you have to eliminate human's selfishness by private ownership