Friedrich Engels — "The history of all hitherto existing society is the history of class struggles."

"A nation cannot be free and at the same time continue to oppress other nations."

"The will of the people is the will of God."

"The old society, with its classes and class antagonisms, is to be replaced by an association, in which the free development of each is the condition for the free development of all."

"The first great division of labour, that between town and country, condemned the rural population to thousands of years of mental stupor, and the urban population to the domination of each individual …"

"The ultimate causes of all social changes and political revolutions are to be sought, not in the brains of men, not in men's better insight into eternal truth and justice, but in changes in the modes …"