Karl Marx and Friedrich Engels, The Communist Manifesto (1848):
Bourgeois Socialism attains adequate expression, when, and only when, it becomes a mere figure of speech.
Free trade: for the benefit of the working class. Protective duties: for the benefit of the working class. Prison Reform: for the benefit of the working class. This is the last word and the only seriously meant word of bourgeois socialism. It is summed up in the phrase: the bourgeois is a bourgeois—for the benefit of the working class.