An ounce of action is worth a ton of theory.
Freedom does not consist in any dreamt-of independence from natural laws, but in the knowledge of these laws, and in the possibility this gives of systematically making them work towards definite ends.
Freedom is the recognition of necessity.
All history has been a history of class struggles between dominated classes at various stages of social development.
Everything must justify its existence before the judgment seat of Reason, or give up existence.
Terror consists mostly of useless cruelties perpetrated by frightened people in order to reassure themselves.