The proletarians have nothing to loose but their chains. They have a world to win.

All history is nothing but a continuous transformation of human nature.

The product of mental labor - science - always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.

The only antidote to mental suffering is physical pain.

For the bureaucrat, the world is a mere object to be manipulated by him.

The animal is one with its life activity. It does not distinguish the activity from itself. It is its activity. But man makes hislife activity itself an object of his will and consciousness. He has a conscious life activity. It is not a determination with which he is completely identified.

Under no pretext should arms and ammunition be surrendered; any attempt to disarm the workers must be frustrated, by force if necessary.