Political economy regards the proletarian like a horse, he must receive enough to enable him to work. It does not consider him, during the time when he is not working, as a human being. It leaves this to criminal law, doctors, religion, statistical tables, politics, and the beadle.
Karl MarxIn the national struggles of the proletarians of the different countries, they point out and bring to the front the common interest of the entire proletariat, independently of all nationality.
Karl Marx