...it happens that society is saved as often as the circle of its ruling class is narrowed, as often as a more exclusive interest asserts itself over the general. Every demand for the most simple bourgeois financial reform, for the most ordinary liberalism, for the most commonplace republicanism, for the flattest democracy is forthwith punished as an assault upon society and is branded as Socialism.

In a higher phase of communist society... only then can the narrow horizon of bourgeois right be fully left behind and society inscribe on its banners: from each according to his ability, to each according to his needs.

In proportion as the bourgeoisie, i.e., capital, is developed, in the same proportion is the proletariat, the modern working class, developed - a class of labourers, who live only so long as they find work, and who find work only so long as their labour increases capital. These labourers, who must sell themselves piecemeal, are a commodity, like every other article of commerce, and are consequently exposed to all the vicissitudes of competition, to all the fluctuations of the market.

Medicine heals doubts as well as diseases.

Go on, get out - last words are for fools who haven't said enough. To his housekeeper, who urged him to tell her his last words so she could write them down for posterity.

In bourgeois society capital is independent and has individuality, while the living person is dependent and has no individuality.

Darwin has interested us in the history of nature's technology.