Friedrich Engels — "The first requisite of all history is the production of the means to satisfy the…"

"The bourgeoisie, by the rapid improvement of all instruments of production, by the immensely facilitated means of communication, draws all, even the most barbarian, nations into civilisation."

"Only the proletariat, by abolishing private property itself, will be able to emancipate itself and thereby all other classes of society."

"It is precisely the alteration of nature by men, not solely nature as such, which is the most essential and immediate basis of human thought."

"The world is not to be interpreted, but to be changed."

"The bourgeoisie has subjected the country to the rule of the towns. It has created enormous cities, has greatly increased the urban population as compared with the rural, and has thus rescued a consid…"