Quote by Friedrich Engels
"Knowledge of the material world is the foundation of all human progress."
"Knowledge of the material world is the foundation of all human progress."
"The oppressed are allowed once every few years to decide which particular representatives of the oppressing class are to represent and repress them."
"All that is solid melts into air, all that is holy is profaned."
"The working men have no country."
"History repeats itself, first as tragedy, second as farce."