The task is not just to understand the world but to change it.

Once the inner connection is grasped, all theoretical belief in the permanent necessity of existing conditions collapses before their collapse in practice -- Letter to Ludwig Kugelmann (July 11, 1868)

Capital is money, capital is commodities. By virtue of it being value, it has acquired the occult ability to add value to itself. It brings forth living offspring, or, at the least, lays golden eggs.

Is it a misfortune that magnificent California was seized from the lazy Mexicans who did not know what to do with it.

The consciousness of the past weighs like a nightmare on the brain of the living.

The country that is more developed industrially only shows, to the less developed, the image of its own future.

A spectre is haunting Europe-the spectre of Communism. All the Powers of old Europe have entered into holy alliance to exorcise this spectre: Pope and Czar, Metternich and Guizot, French Radicals and German police-spies. Where is the Party in opposition that has not been decried as Communistic by its opponents in power? Where the Opposition that has not hurled back the branding reproach of Communism, against the more advanced opposition parties, as well as against its reactionary adversaries?