The liberation of the workers can only be the work of the working class itself, it can never accomplish this gigantic and terrible work of history, however, if it is torn in two halves by the sex distinction. As the men and women of the proletariat are united body and soul in their crushing life of misery, so must they also unite a burning hatred of capitalism with a more confident, more daring will to fight for the Revolution.
— CLARA ZETKIN