"Mankind always sets itself only such tasks as it can solve; since looking at the matter more closely, it will always be found that the task itself arises only when the material conditions for its solution are already present."
"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."
