"In order to abolish the idea of private property, the idea of communism is completely sufficient. It takes actual communist action to abolish actual private property. History will com to it; and this movement, which in theory we already know to be a self-transcending movement, will constitute in actual fact a very severe and protracted process. But we must regard it as a real advance to have gained beforehand a consciousness of the limited character a well as of the goal of this historical movement - and a consciousness which reaches out beyond it."