Both for the production on a mass scale of this communist consciousness, and for the success of the cause itself, the alteration of men on a mass scale is necessary, an alteration which can only take place in a practical movement, a revolution; this revolution is necessary, therefore, not only because the ruling class cannot be overthrown in any other way, but also because the class overthrowing it can only in a revolution succeed in ridding itself of all the muck of ages and become fitted to found society anew.
Karl Marx[Napoleon] swept away everywhere the establishments of feudality. ... [He was] Caesar himself.
Karl MarxIn a word, the free trade system hastens the social revolution. It is in this revolutionary sense alone, gentlemen, that I vote in favor of free trade.
Karl MarxWe know that violent measures against religion are nonsense; but this is an opinion: as socialism grows, religion will disappear. Its disappearance must be done by social development, in which education must play a part.
Karl MarxIn the domain of Political Economy, free scientific inquiry meets not merely the same enemies as in all other domains. The peculiar nature of the material it deals with, summons as foes into the field of battle the most violent, mean and malignant passions of the human breast, the Furies of private interest.
Karl Marx