In this sense, the theory of the Communists may be summed up in the single sentence: Abolition of private property. - Manifesto of the Communist Party

Hegel remarks somewhere that all great, world-historical facts and personages occur, as it were, twice. He has forgotten to add: the first time as tragedy, the second as farce.

In 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.

When commercial capital occupies a position of unquestioned ascendancy, it everywhere constitutes a system of plunder.

The most interesting acquaintanceship I have struck up here is that of Colonel Lapinski. He is without doubt the cleverest Pole - besides being an homme d'action [man of action] - that I have ever met. His sympathies are all on the German side, though in manners and speech he is also a Frenchman. He cares nothing for the struggle of nationalities and only knows the racial struggle. He hates all Orientals, among whom he numbers Russians Turks, Greeks, Armenians, etc., with equal impartiality.... His aim now is to raise a German legion in London.

Religion is the opiate of the people.

Philosophy stands in the same relation to the study of the actual world as masturbation to sexual love.