The religious world is but a reflex of the real world.

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

Surplus-value and the rate of surplus-value are... the invisible essence to be investigated, whereas the rate of profit and hence the form of surplus-value as profit are visible surface phenomena

All our inventions have endowed material forces with intellectual life, and degraded human life into a material force.

Misery motivates, not utopia.

The alienation of man thus appeared as the fundamental evil of capitalist society.

To be radical is to grasp things by the root.