"The demand for a free press is essentially a demand for the freedom of public opinion."

"For him, the solution of present-day problems does not consist in public action but in the dialectical rotations of his brain."

"Workers of the world, unite! You have nothing to lose but your chains!"

"The worker becomes poorer the more wealth he produces, the more his production increases in power and range. The worker becomes an ever cheaper commodity the more commodities he creates."

"The bourgeoisie, historically, has played a most revolutionary part."